[1] Univ Ghana, Sch Publ Hlth, Accra Legon, Ghana
[2] Harvard Univ, Dept Global Hlth & Populat, TH Chan Sch Publ Hlth, Boston, MA 02115 USA
[3] Univ Ghana, Reg Inst Populat Studies, Accra, Ghana
[4] Univ Ghana, Noguchi Mem Inst Med Res, Epidemiol, Accra, Ghana
[5] Univ Ghana, Sch Publ Hlth, Accra, Ghana
[6] Univ Oxford, Ctr Global Primary Care, Oxford, England
[7] Univ Sydney, Sch Publ Hlth, Sydney, NSW, Australia