1. Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Mae Fah Luang University, Chiang Rai, Thailand
2. Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
3. Department of Surgery, Faculty of Medicine, Princess Naradhiwas University, Naradhiwas, Thailand
4. Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand