Reduction of maternal-infant transmission of human immunodeficiency virus type 1 with zidovudine treatment. Pediatric AIDS Clinical Trials Group Protocol 076 Study Group. Connor EM, Sperling RS, Gelber R, Kiselev P, Scott G, O’Sullivan MJ, VanDyke R, Bey M, Shearer W, Jacobson RL, et al. N Engl J Med. 1994 Nov 3;331(18):1173-80. doi: 10.1056/NEJM199411033311801.