1. Department of Environmental Health Sciences, School of Public Health, University of Michigan , SPHII M6242, 1415 Washington Heights, Ann Arbor, MI , USA
2. Taubman Health Sciences Library, University of Michigan , Ann Arbor, MI , USA
3. Department of Systems, Populations and Leadership, School of Nursing, University of Michigan , 400 N. Ingalls St. Ann Arbor, MI , USA