[1] Univ Manitoba, Fac Hlth Sci, Winnipeg, MB, Canada
[2] Univ British Columbia, Sch Populat & Publ Hlth, Fac Med, Vancouver, BC, Canada
[3] British Columbia Ctr Dis Control, Vancouver, BC, Canada
[4] Univ Witwatersrand, Dept Obstet & Gynaecol, MRU MatCH Res Unit, Fac Hlth Sci, Durban, South Africa
[5] South African Med Res Council, Burden Dis Res Unit, Cape Town, South Africa
[6] Univ KwaZulu Natal, Sch Nursing & Publ Hlth, Coll Hlth Sci, Durban, South Africa
[7] Univ British Columbia, Fac Med, Vancouver, BC, Canada
[8] Univ Manitoba, Ongomiizwin Indigenous Inst Hlth & Healing, Winnipeg, MB, Canada
[9] Univ Northern British Columbia, Fac Hlth Sci, Prince George, BC, Canada
[10] Univ Ottawa, Sch Epidemiol & Publ Hlth, Fac Med, Ottawa, ON, Canada
[11] Simon Fraser Univ, Fac Hlth Sci, Burnaby, BC, Canada
[12] Univ Witwatersrand, Perinatal HIV Res Unit, Fac Hlth Sci, Johannesburg, South Africa
[13] South African Med Res Council, Hlth Syst Res Unit, Cape Town, South Africa
[14] South African Med Res Council, Off President, Cape Town, South Africa