Changing Epidemiology of Triplet Pregnancy: Etiology and Outcome Over Twelve Years - Ho, Maw-Lin; Chen, Jia-Yuh; Ling, Ung-Paw; Chen, Jeun-Horng; Huang, Chie-Ming; Chang, Chia-Chiang; Su, Pen-Hua (American Journal of Perinatology, 1996)