title: Introduction.
authors.affiliation: Duke University Medical Center, Durham, NC 27710, USA.
authors.forename: D T
authors.initials: DT
authors.lastname: Gold
mesh_terms: D000375:Aging / Q000523:psychology*; D004059:Diffusion of Innovation; D006801:Humans; D007400:Interprofessional Relations; D012961:Sociology