[1] McMaster Univ, Populat Hlth Res Inst, Hamilton, ON, Canada
[2] Hamilton Hlth Sci, Hamilton, ON, Canada
[3] Karolinska Inst, Dept Med Solna, Stockholm, Sweden
[4] Estudios Clin Latino Amer, Rosario, Santa Fe, Argentina
[5] Univ Toronto, St Michaels Hosp, Toronto, ON, Canada