1. Department of Human Movement Sciences; Old Dominion University; Norfolk VA USA
2. Department of Pharmacology and Nutritional Sciences; University of Kentucky College of Medicine; Lexington KY USA
3. Department of Obstetrics and Gynecology; University of Kentucky College of Medicine; Lexington KY USA
4. Department of Medicine; Dartmouth College; Lebanon NH USA
5. Department of Pulmonary Medicine; Dartmouth-Hitchcock Medical Center; Lebanon NH USA
6. Department of Environmental Health; Rollins School of Public Health; Emory University; Atlanta GA USA