1. Oregon Health and Science University; Department of Obstetrics and Gynecology; 3181 SW Sam Jackson Park Road UHN 50 Portland Oregon USA
2. University of Washington; Obstetrics and Gynecology; Seattle USA
3. Columbus USA
4. Oregon Health and Sciences University; Dept. of Obstetrics and Gynaecology; 3181 SW Sam Jackson Street Portland Oregon USA OR 97239
5. University of North Carolina; Dept. of Obstetrics and Gynecology; Chapel Hill North Carolina USA