title: Outcomes research: challenge for the 1990s.
authors.forename: R S
authors.initials: RS
authors.lastname: Heilman
mesh_terms: D004059:Diffusion of Innovation; D006801:Humans; D017063:Outcome Assessment, Health Care; D011170:Portasystemic Shunt, Surgical / Q000379:methods*; D015642:Radiology, Interventional