Pregnancy

• Obstetric Unit, University of Ferrara — Cona, Ferrara, Italy

• Johns Hopkins Bayview Medical Center — Baltimore, Maryland, United States

Not specified

• The George Washington University — Washington D.C., District of Columbia, United States

• University of Southern California — Los Angeles, California, United States
• University of Miami, Miller School of Medicine — Miami, Florida, United States
• Medical College of Georgia — Augusta, Georgia, United States
• University of Illinois — Chicago, Illinois, United States

• Fountain Valley Regional Hospital and Medical Center- UCI MFM private practice — Fountain Valley, California, United States
• Long Beach Memorial Medical Center, Women's and Children's Hospital - Women's Perinatal Group, OB Clinic — Long Beach, California, United States
• University of California, Irvine, Medical Center - Prenatal care clinics and private practice — Orange, California, United States
• Christiana Care Health Systems — Newark, Delaware, United States

• Digestive Disease Center, Bispebjerg Hospital — Copenhagen, Denmark

• Mayo Clinic in Rochester — Rochester, Minnesota, United States

Not specified

• Health Policy Research Center — Shiraz, Fars, Iran