Jarallah J S, Noweir K M, al-Shammari S A, al-Saleh I A, al-Zahrani M A, al-Ayed M H
Department of Family and Community Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Bull Environ Contam Toxicol. 1993 May;50(5):730-5. doi: 10.1007/BF00194669.