Abortion, Habitual

• Obstetrics and Gynecology Department in Mansoura University Hospital — Al Mansurah, Dakahlia Governorate, Egypt
• Private practice settings — Al Mansurah, Dakahlia Governorate, Egypt

• Clinica Universitaria de Navarra — Pamplona, Navarre, Spain
• Gendiag.exe, S.L. — Esplugues de Llobregat, Select State, Spain
• Institut d'Investigació Sant Pau — Barcelona, Spain
• Instituto Salud Carlos III — Madrid, Spain

• Shanghai Jiai Genetics & IVF Institute — Shanghai, China

• University Medical Center — Utrecht, Netherlands

• Hospital Federal dos Servidores do Estado, Ministry of Health — Rio de Janeiro, Brazil

• Kasr Alainy medical school — Cairo, Cairo Governorate, Egypt

Not specified

• The University of Chicago — Chicago, Illinois, United States

• Hospital Federal dos Servidores do Estado — Rio de Janeiro, Brazil

Not specified