1. a Department of Health Science , Brigham Young University , 229D Richards Building, Provo , UT , 84602
2. b Department of Health Science , Brigham Young University , 221B Richards Building, Provo , UT , 84602
3. c Department of Health Science , Brigham Young University , 213A Richards Building, Provo , UT , 84602
4. d School of Public Health , University of Alabama Birmingham , 1665 University Blvd, Birmingham , AL , 35294
5. e Department of Health Science , Brigham Young University , 213 Richards Building, Provo , UT , 84602