Coleman BG, Grumbach K, Arger PH, Mintz MC, Arenson RL, Mennuti M, Gabbe SG. Twin gestations: monitoring of complications and anomalies with US. Radiology. 1987 Nov; 165(2):449-53.
Coleman BG, Grumbach K, Arger PH, Mintz MC, Arenson RL, Mennuti M, Gabbe SG