[1] Univ Sydney, Food Policy Div, George Inst Global Hlth, Sydney, NSW 2006, Australia
[2] Heart & Stroke Fdn South Africa, Sci & Programme Dev Dept, Durban, South Africa
[3] Univ Wollongong, Fac Sci Med & Hlth, Sch Med, Wollongong, NSW 2522, Australia
[4] Univ Cape Town, Chron Dis Initiat Africa, Dept Med, Fac Hlth Sci, ZA-7700 Rondebosch, South Africa
[5] North West Univ, Ctr Excellence Nutr, Potchefstroom, South Africa
[6] North West Univ, Med Res Council, Res Unit Hypertens & Cardiovasc Dis, Fac Hlth Sci, Potchefstroom, South Africa
[7] Heart & Stroke Fdn South Africa, Cape Town, South Africa
[8] Univ Stellenbosch, Fac Med & Hlth Sci, Dept Psychiat, Cape Town, South Africa