Authors:
Kogan, MD
Alexander, GR
Kotelchuck, M
MacDorman, MF
Buekens, P
Martin, JA
Papiernik, E
Citation: Md. Kogan et al., Trends in twin birth outcomes and prenatal care utilization in the United States, 1981-1997, J AM MED A, 284(3), 2000, pp. 335-341