TYPES OF STUDY DESIGN Dr. AREE BUTSORN Ph.D. Public Health (INTERNATIONAL) Public Health Technical Officer KHUKHAN HEALTH OFFICE Email: [email protected] Tel: 08-7228-3918

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Transcript TYPES OF STUDY DESIGN Dr. AREE BUTSORN Ph.D. Public Health (INTERNATIONAL) Public Health Technical Officer KHUKHAN HEALTH OFFICE Email: [email protected] Tel: 08-7228-3918