1. Department of Community Medicine; School of Medical Sciences; Universiti Sains Malaysia; 16150 Kubang Kerian Kelantan Malaysia
2. Population Health and Preventive Medicine Discipline; Faculty of Medicine; Universiti Teknologi MARA; Batu Caves Selangor Malaysia
3. Unit of Biostatistics and Research Methodology; School of Medical Sciences; Universiti Sains Malaysia; 16150 Kubang Kerian Kelantan Malaysia
4. Department of Family Medicine; School of Medical Sciences; Universiti Sains Malaysia; 16150 Kubang Kerian Kelantan Malaysia
5. Mi Tzong Qigong Association; 18-3 3rd Mile Square Kuala Lumpur Malaysia