Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Blood sampling (procedure)
• Nasal biopsies (procedure)
• Nasal specimen collection (biological)
• Mucosal RNA sampling (procedure)
• Intranasal challenge (procedure)
• Skin prick test (procedure)
• Peak Nasal Inspiratory Flow (PNIF) (procedure)
• Pregnancy test (biological)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Medical University of Vienna
  Vienna, State of Vienna, Austria
  Site recruitment: Recruiting

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Pregnancy Test (other)
• Job aid (other)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Central Region, GHANA
  Cape Coast, Central Region, Ghana
  Site recruitment: Not reported
• Central Province, ZAMBIA
  Kabwe;Chibombo, Central Province, Zambia
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Risk classification of PUL by M4 (diagnostic_test)
• Risk classification of PUL by NICE (diagnostic_test)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Södra Älvsborgs Sjukhus
  Borås, Sweden
  Site recruitment: Not reported
• Sahlgrenska University Hospital
  Gothenburg, Sweden
  Site recruitment: Not reported
• Skaraborgs sjukhus Skövde
  Skövde, Sweden
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Urinary-hCG (other)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Akureyri Hospital
  Akureyri, Iceland
  Site recruitment: Not reported
• University of Akureyri
  Akureyri, Iceland
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Human chorionic gonadotropin (hCG) (drug)
• Prednisone (drug)
• Dexamethasone (drug)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Universidad Autónoma de Nuevo León
  Monterrey, Nuevo León, Mexico
  Site recruitment: Recruiting

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Natural Cycle (procedure)
• Artificial Cycle (procedure)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Indira IVF Hospital Private Limited
  Udaipur, Rajasthan, India
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Estradiol + Progesterone (drug)
• Ovitrelle ( Hcg 250 mcg) (drug)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Laura Burunat
  Barcelona, Spain, Spain
  Site recruitment: Recruiting

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Endometrial Pattern on Ultrasound at ET (diagnostic_test)
• Endometrial Pattern on Ultrasound at HCG (diagnostic_test)
• Endometrial Pattern on Ultrasound at TVOR (diagnostic_test)
• Endometrial Pattern on Ultrasound at co-ordination scan (diagnostic_test)
• Endometrial thickness at HCG (diagnostic_test)
• Endometrial thickness at TVOR (diagnostic_test)
• Endometrial thickness at ET (diagnostic_test)
• Endometrial thickness at coordination scan (diagnostic_test)
• Endometrial volume at HCG (diagnostic_test)
• Endometrial volume at TVOR (diagnostic_test)
• Endometrial volume at ET (diagnostic_test)
• Endometrial volume at coordination scan (diagnostic_test)
• Blood test for progesterone at HCG (diagnostic_test)
• Blood test for progesterone at TVOR (diagnostic_test)
• Blood test for progesterone at ET (diagnostic_test)
• Blood test for progesterone at coordination scan (diagnostic_test)
• Change in endometrial pattern between TVOR and ET (diagnostic_test)
• Blood test for estradiol at HCG (diagnostic_test)
• Blood test for estradiol at TVOR (diagnostic_test)
• Blood test for estradiol at ET (diagnostic_test)
• Blood test for estradiol at coordination scan (diagnostic_test)
• Endometrial blood flow (doppler) at HCG (diagnostic_test)
• Endometrial blood flow (doppler) at TVOR (diagnostic_test)
• Endometrial blood flow (doppler) at ET (diagnostic_test)
• Endometrial blood flow (doppler) at coordination scan (diagnostic_test)
• Contractility at embryo transfer on a subgroup of participants (diagnostic_test)
• Change in endometrial pattern between coordination scan and ET (diagnostic_test)
• Change in endometrial pattern between HCG and ET (diagnostic_test)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Nurture Fertility
  Nottingham, Nottinghamshire, United Kingdom
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Zishen Yutai Pill (drug)
• Placebo (drug)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Chongqing Health Center For Women and Children
  Chongqing, Chongqing Municipality, China
  Site recruitment: Not reported
• The First Hospital of Lanzhou University
  Lanzhou, Gansu, China
  Site recruitment: Not reported
• Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
  Guangzhou, Guangdong, China
  Site recruitment: Not reported
• Liuzhou Maternal and Child Healthcare Hospital
  Liuzhou, Guangxi, China
  Site recruitment: Not reported
• The First Affiliated Hospital of Zhengzhou University
  Zhengzhou, Henan, China
  Site recruitment: Not reported
• The Third Affiliated Hospital of Zhengzhou University
  Zhengzhou, Henan, China
  Site recruitment: Not reported
• Reproductive and Genetic Hospital of CITIC-XIANGYA
  Changsha, Hunan, China
  Site recruitment: Not reported
• The Affiliated Suzhou Hospital of Nanjing Medical University
  Suzhou, Jiangsu, China
  Site recruitment: Not reported
• Reproductive Hospital affiliated to Shandong University
  Jinan, Shandong, China
  Site recruitment: Not reported
• Northwest Women and Children's Hospital
  Xi’an, Shanxi, China
  Site recruitment: Not reported
• Tangdu Hospital of Air Force Medical University
  Xi’an, Shanxi, China
  Site recruitment: Not reported
• West China Second University Hospital/West China Women's and Children's Hospital
  Sichuan, Sichuan, China
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Follitropin alpha (drug) — also listed as: Gonal F, Puregon, Urofollitropin
• Menotropin (drug) — also listed as: Menopur

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Poznan University of Medical Sciences
  Poznan, Poland
  Site recruitment: Not reported
• Reproductive Medicine Center
  Malmö, Sweden
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• human chorionic gonadotropin (drug) — also listed as: HCG

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

The registry does not list facilities in this record. This does not mean the study has no sites.

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• GnRH-a (drug)
• GnRH-anta (drug)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Reproductive Medical Center, 1st Affiliated Hospital of Zhengzhou University
  Zhengzhou, Henan, China
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Assuit University, Assuit, Egypt.
  Asyut, Egypt
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Natural cycle (drug)
• Estradiol Valerate (drug) — also listed as: Artificial cycle
• Micronized progesterone (drug) — also listed as: Artificial cycle

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• UZ Leuven
  Leuven, Belgium
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Elagolix 200 MG (drug)
• Leuprolide Acetate 3.75 MG/ML (drug)
• Lab work (diagnostic_test)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Colorado Center for Reproductive Medicine
  Lone Tree, Colorado, United States
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• HCG is introduced at day of trigger intra-uterine (drug)
• endometrial injury by pipelle (device)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Wael Elbanna Clinic
  Cairo, Egypt
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• MOBIL AND ONLINE EDUCATION (other)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

The registry does not list facilities in this record. This does not mean the study has no sites.

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• Clomiphene Citrate. (drug) — also listed as: Clomid®
• Sildenafil Citrate (drug) — also listed as: Viagra®
• Intrauterine Insemination (procedure) — also listed as: IUI

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Batterjee Medical College
  Jeddah, Mecca Region, Saudi Arabia
  Site recruitment: Not reported

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

• natural cycle endometrial preparation (procedure)

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

• Antalya IVF
  Antalya, Antalya, Turkey (Türkiye)
  Site recruitment: Not reported