[1] RAND Corp, Santa Monica, CA USA
[2] Univ Buenos Aires, Inst Clin Effectiveness & Hlth Policy, Buenos Aires, DF, Argentina
[3] Grand Challenges Canada, Toronto, ON, Canada
[4] Behman Psychiat Hosp, Cairo, Egypt
[5] NHLBI, Bethesda, MD 20892 USA
[6] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[7] Univ Toronto, Dept Surg, Toronto, ON, Canada
[8] Univ Stellenbosch, Wallenberg Res Ctr, Stellenbosch Inst Adv Study STIAS, ZA-7600 Stellenbosch, South Africa