[1] Univ North Dakota, Grand Forks, ND USA
[2] St Marys Univ Minnesota, Doctor Psychol Program Counseling Psychol, Sch Hlth & Human Serv, Minneapolis, MN USA
[3] Univ Manitoba, Max Rady Coll Med, Dept Community Hlth Sci, Winnipeg, MB, Canada
[4] Univ Illinois, Sch Publ Hlth, Dept Epidemiol & Biostat, Chicago, IL USA