1. Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
2. Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
3. Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
4. Department of Obstetrics and Gynaecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand