The effect of plurality and obesity on betamethasone concentrations in women at risk for preterm delivery

Cynthia Gyamfi, Lisa Mele, Ronald J. Wapner, Catherine Y. Spong, Alan Peaceman, Yoram Sorokin, Donald J. Dudley, Francee Johnson, Kenneth J. Leveno, Steve N. Caritis, Brian M. Mercer, John M. Thorp, Mary J. O'Sullivan, Susan M. Ramin, Marshall Carpenter, Dwight J. Rouse, Menachem Miodovnik, Baha Sibai