[1] Univ Calif San Francisco, Sch Nursing, Dept Community Hlth Syst, 2 Koret Way,511R, San Francisco, CA 94143 USA
[2] Univ Michigan, Sch Nursing, Carol J & Edward F Lake Prof Nursing Populat Hlth, Ann Arbor, MI 48109 USA
[3] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Hlth Policy & Management, Pittsburgh, PA USA
[4] Senior Economist RAND, Pittsburgh, PA USA
[5] CUNY Hunter Coll, Hunter Bellevue Sch Nursing, Gerontol, New York, NY 10021 USA
[6] CUNY Hunter Coll, Hunter Bellevue Sch Nursing, New York, NY 10021 USA