[1] Univ Rochester, Sch Nursing, Rochester, NY USA
[2] Univ Rochester, Med Ctr, Ctr Hlth & Technol, 265 Crittenden Blvd,CU 420694, Rochester, NY 14642 USA
[3] Univ Rochester, Dept Biostat & Computat Biol, Rochester, NY USA
[4] Natl Parkinson Fdn, Miami, FL USA
[5] Univ Rochester, Med Ctr, Dept Neurol, Rochester, NY 14642 USA
[6] Johns Hopkins Univ, Sch Med, Dept Med, Div Geriatr Med & Gerontol, Baltimore, MD 21205 USA
[7] Simone Consulting, Sunnyvale, CA USA
[8] Univ Penn, Dept Neurol, Perelman Sch Med, Philadelphia, PA 19104 USA
[9] Univ Penn, Dept Biostat & Epidemiol, Perelman Sch Med, Philadelphia, PA 19104 USA