1. Department of Public Health, University of the Punjab, Lahore 54590, Pakistan
2. Department of Food Science and Human Nutrition, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
3. Bakhtawar Amin Medical and Dental College, Multan 60600, Pakistan
4. Institute of Public Health, Charité—Universitätsmedizin Berlin, 10117 Berlin, Germany