1. Increasing trends in pleural births in the United States;Jewell;Obstet Gynecol,1995
2. Twins and triplets;Garite;Am J Obstet Gynecol,2004
3. Effect of maternal height on gestational age and birth weight in nulliparous mothers of triplets with a normal pregravid body mass index;Blickstein;J Reprod Med,2003
4. Triplet and quadruplet pregnancies and management;Ron-El;Obstet Gynecol,1981