title: NIH's Undiagnosed Diseases Program expands: 6 new sites offer potential answers to more patients.
authors.forename: Bridget M
authors.initials: BM
authors.lastname: Kuehn
mesh_terms: D035843:Biomedical Research; D003937:Diagnosis, Differential; D006801:Humans; D009316:National Institutes of Health (U.S.); D014481:United States