Promoting deceased organ and tissue donation registration in family physician waiting rooms (RegisterNow-1): a pragmatic stepped-wedge, cluster randomized controlled registry trial oleh Alvin Ho-ting Li, Amit X. Garg, Jeremy M. Grimshaw, Versha Prakash, Alexie J. Dunnett, Stephanie N. Dixon, Monica Taljaard, Joanna Mitchell, Kyla L. Naylor, Cathy Faulds, Rachel Bevan, Leah Getchell, Greg Knoll, S. Joseph Kim, Jessica Sontrop, Allison Tong, Lise M. Bjerre, Karyn Hyjek, Donna Currie, Susan Edwards, Mike Sullivan, Linda Harvey-Rioux, Justin Presseau