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机构:
Corporal Crescenz Vet Affairs Med Ctr, Ctr Hlth Equ Res & Promot, Philadelphia, PA USA
Univ Penn, Leonard Davis Inst Hlth Econ, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Div Geriatr, Philadelphia, PA 19104 USA Icahn Sch Med Mt Sinai, Dept Populat Hlth Sci & Policy, New York, NY 10029 USA