1. Division of Epidemiology, Biostatistics, and Environmental Health Sciences; School of Public Health; University of Memphis; Memphis TN USA
2. College of Social Work; University of South Carolina; Columbia SC USA
3. Department of Community Medicine and Behavioral Sciences; Faculty of Medicine; Kuwait University; Kuwait City Kuwait
4. College of Veterinary Medicine; Michigan State University; East Lansing MI USA
5. Clinical and Experimental Medicine; Faculty of Medicine; University of Southampton; Southampton UK
6. Human Development and Health; Faculty of Medicine; University of Southampton; Southampton UK
7. David Hide Asthma and Allergy Research Centre; Isle of Wight UK