Valarie Blue Bird Jernigan and Alicia L. Salvatore are with the College of Public Health, University of Oklahoma Health Sciences Center, Tulsa. Michael Peercy and Bobby Saunkeah are with the Health Services Division, Chickasaw Nation of Oklahoma, Ada. Dannielle Branam and David Wharton are with the Health Services Division, Choctaw Nation of Oklahoma, Talihina. Marilyn Winkleby is with the Stanford Prevention Research Center, Stanford School of Medicine, Stanford, CA. John Lowe is with the Christine E....