1. McMaster University, Hamilton, Ontario, Canada (D.Z., B.C.J., J.B., K.C., K.M., B.S., A.M.Z., Y.L., G.H.G.)
2. Jagiellonian University Medical College, Kraków, Poland (M.M.B.)
3. Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain (C.V., M.R., P.A.)
4. University of British Columbia, Vancouver, British Columbia, Canada (D.S.)
5. University of Toronto, Toronto, Ontario, Canada (A.A.)
6. Chosun University, Gwangju, Republic of Korea (M.A.H.)
7. Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, the Netherlands (R.W.V.)
8. Institute of Science and Technology, Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil (R.E.)