Published on in Vol 5 , No 2 (2016) :Apr-Jun

1 Kaiser Permanente Southern California, Department of Research & Evaluation, Pasadena, CA, US
2 Kaiser Permanente Hawaii, Center for Health Research, Honolulu, HI, US
3 Group Health Research Institute, Seattle, WA, US
4 Kaiser Permanente Northwest, Center for Health Research, Portland, OR, US
5 Kaiser Permanente Northern California, Division of Research, Oakland, CA, US
6 Kaiser Permanente Colorado, Institute for Health Research, Denver, CO, US
7 HealthPartners Institute, Bloomington, MN, US
8 Mid-Atlantic Permanente Research Institute, Rockville, MD, US
9 Kaiser Permanente Georgia, Atlanta, GA, US
10 Wake Forest Baptist Medical Center, Department of Epidemiology & Prevention, Winston-Salem, NC, US
*all authors contributed equally