Lauren A McCormack1, Colleen M McBride2, Michael K Paasche-Orlow3. 1. a Center for Communication Science , RTI International , Research Triangle Park , North Carolina , USA. 2. b Behavioral Sciences and Health Education Department , Emory University , Atlanta , Georgia , USA. 3. c Division of General Internal Medicine, Department of Medicine , Boston University School of Medicine , Boston , Massachusetts , USA.