Signs and Symptoms, Digestive

• Federal State Institution Central Research Institute of Traumatology and Orthopedics n.a. N.N. Priorov under the Federal Agency for High-Tech Medical Care — Moscow, Russia
• Federal State Institution Moscow Research Institute of Pediatrics and Pediatric Surgery under the Federal Agency for High-Tech Medical Care — Moscow, Russia
• Federal State Institution St. Petersburg Research Institute of Ear, Throat, Nose and Speech under the Federal Agency for High-Tech Medical Care — Saint Petersburg, Russia
• State Higher Educational Institution: "St. Petersburg State Pediatric Medical Academy under the Federal Agency for Healthcare and Social Development" — Saint Petersburg, Russia

• VA Medical Center, Birmingham — Birmingham, Alabama, United States

• Dpt. of Obstetrics and Gynaecology, Haukeland University Hospital — Bergen, Hordaland, Norway
• Dpt Obstetrics Gynaecology, Stavanger University Hospital — Stavanger, Rogaland, Norway

• RCFFN: University of Manitoba — Winnipeg, Manitoba, Canada

• The Canadian College of Naturopathic Medicine — Toronto, Ontario, Canada

• Kaiser Permanente — Los Angeles, California, United States

Not specified

Not specified

• BioPharma Services Inc. — Toronto, Ontario, Canada

• Woburn, Massachusetts, United States