Chiang Mai University, Chiang Mai, Thailand
Maharaj Nakorn ChiangMai Hospital, ChiangMai, Thailand
Kuntharee Traisrisilp, Chiang Mai, Thailand
Department of OB-GYN, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
Pharmacoepidemiology and Statistics Research Center, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
Chiang Mai University Hospital, Chiang Mai, Thailand
Pharmacoepidemiology and Statistics Research Center, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
Kittipat Charoenkwan, Chiang Mai, Thailand
Kittipat Charoenkwan, Chiang Mai, Thailand