Original Article: PDF OnlyLocked Twins with Survival of Both Infants Report of a CaseBULFIN, MATTHEW J. M.D., F.A.C.O.G.; BERNAT, THOMAS S. M.D. Author Information From the Department of Obstetrics and Gynecology, Little Company of Mary Hospital, Evergreen Park, Ill. Obstetrics & Gynecology 21(3):p 387-388, March 1963. Buy © 1963 The American College of Obstetricians and Gynecologists