1. Department of Industrial Chemistry Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand 1518 Pracharat 1 Road, Wongsawang, Bangsue Bangkok 10800
2. Surgery Department Faculty of Medicine Ramathibodi Hospital Mahidol University, Bangkok Thailand 270 Thanon Rama VI, Thung Phaya Thai, Ratchathewi Bangkok 10400