Surussavadee Waiwong, LecturerÍÒ¨ÒÃÂì ÊØÃÑÊÇ´Õ äÇÇèͧPublic Health NursingFaculty of Nursing, Mahidol UniversityTel. No. 02-4415333 02-4415275-81 Ext. 2667 Surussavadee.wai@mahidol.ac.th