A rare set of \"momo\" twins born eight weeks premature have been cleared by doctors and are finally home with their parents in Maryland. The boys, Brooks and Nolan Bauer, were born by Caesarian section Feb. 13 a full two months early because they were monoamniotic, meaning they shared the same amniotic sac, The Baltimore Sun reported Saturday. Momo twins are rare, occurring once in every 10,000 pregnancies, said Dr. Claire Weitz, the obstetrician and gynecologist who oversaw mom Katie Bauer\'s care. This type of pregnancy can be very dangerous, the Sun said, because one or both of the twins could become entangled in each other\'s umbilical cords, cutting off oxygen and nutrients. Because of that, Bauer spent a month before the delivery in the hospital, undergoing sonograms three times a day to check the boys\' condition. \"They were really premature, eight weeks early,\" Bauer said about the birth. \"They told us they might be on respirators and things like that … but they only had these little tubes in their noses and were getting room air. \"Compared to a lot of [momo] babies, our babies were amazingly lucky,\" she added. \"I still can\'t believe how lucky we are.\"