Methods guiding stakeholder engagement in planning a pragmatic study on changing stroke systems of care oleh Sabina B. Gesell, Karen Potvin Klein, Jacqueline Halladay, Janet Prvu Bettger, Janet Freburger, Doyle M. Cummings, Barbara J. Lutz, Sylvia Coleman, Cheryl Bushnell, Wayne Rosamond, Pamela W. Duncan, COMPASS Study Investigators