Year, Count, Co-author(s) 2013,7,"Dahl, E. J.; Warren, D. J.; Van Riper, D.; Van Ripe, r D.; Thomas, A. J.; Westgard, Bjorn C., MD, MA; Anderson, C. P." 2014,3,"Dahl, E. J.; Van Riper, D.; Westgard, Bjorn C., MD, MA"