Maternal body mass index and gestational weight gain and their association with perinatal outcomes in Viet Nam oleh Erika Ota, Megumi Haruna, Motoi Suzuki, Dang Duc Anh, Le Huu Tho, Nguyen Thi Thanh Tam, Vu Dinh Thiem, Nguyen Thi Hien Anh, Mitsuhiro Isozaki, Kenji Shibuya, Koya Ariyoshi, Sachiyo Murashima, Hiroyuki Moriuchi, Hideki Yanai