[1] Mt Sinai Hosp, Sydney G Frankfort Chair Family Med, Toronto, ON M5G 1X5, Canada
[2] Univ Toronto, Dept Family Med, Toronto, ON M5S 1A1, Canada
[3] BC Canc Agcy, Hereditary Canc Program, Vancouver, BC, Canada
[4] Childrens Hosp Eastern Ontario, Dept Genet, Ottawa, ON K1H 8L1, Canada
[5] Univ Ottawa, Dept Pediat, Ottawa, ON K1N 6N5, Canada
[6] Univ Toronto, Dept Family & Community Med, Toronto, ON M5S 1A1, Canada
[7] STAR Family Hlth Team, Stratford, NJ USA
[8] Sudbury Reg Hosp, Sudbury, ON, Canada
[9] N York Gen Hosp, N York Toronto, ON, Canada
[10] Ottawa Hlth Res Inst, Dept Med, Ottawa, ON, Canada
[11] Ottawa Hlth Res Inst, Clin Epidemiol Program, Ottawa, ON, Canada
[12] CHEO, Dept Genet, Ottawa, ON, Canada
[13] CHEO, Dept Cardiol, Ottawa, ON, Canada
[14] Mt Sinai Hosp, Granovsky Gluskin Family Med Ctr, Toronto, ON M5G 1X5, Canada
[15] Univ Ottawa, Dept Epidemiol & Community Med, Ottawa, ON K1N 6N5, Canada