Monochorionic-triamniotic triplet pregnancy after intracytoplasmic sperm injection, assisted hatching, and two-embryo transfer: first reported case following IVF. - Ghulmiyyah, Labib M.; Perloe, Mark; Tucker, Michael J.; Zimmermann, Julie H.; Eller, Daniel P.; Sills, E. Scott (BMC Pregnancy & Childbirth, 2003)