Chutima Sirikulchayanonta. (1994) Pattern of maternal weight gain during pregnancy and preterm delivery. Mahidol University,:ม.ป.ท.Chutima Sirikulchayanonta. 1994. Pattern of maternal weight gain during pregnancy and preterm delivery. ม.ป.ท.:Mahidol University,;Chutima Sirikulchayanonta. Pattern of maternal weight gain during pregnancy and preterm delivery. ม.ป.ท.:Mahidol University, 1994. Print.