Authors: Butler, EL Dashe, JS Ramus, RM

Citation: El. Butler et al., Association between maternal serum alpha-fetoprotein and adverse outcomes in pregnancies with placenta previa, OBSTET GYN, 97(1), 2001, pp. 35-38

Authors: Butler, EL Cox, SM Eberts, EG Cunningham, FG

Citation: El. Butler et al., Symptomatic nephrolithiasis complicating pregnancy, OBSTET GYN, 96(5), 2000, pp. 753-756