[1] Edward Hines Jr VA Hosp, Ctr Innovat Complex Chron Healthcare CINCCH, Hines, IL 60141 USA
[2] Loyola Univ, Parkinson Sch Hlth Sci & Publ Hlth, Maywood, IL USA
[3] Edward Hines Jr VA Hosp, Cooperat Studies Coordinating Ctr, Hines, IL USA
[4] Univ Calif San Francisco, Weill Inst Neurosci, Dept Neurol, San Francisco, CA USA
[5] Edward Hines Jr VA Hosp, Neurol Serv, Hines, IL USA
[6] Univ Calif San Francisco, Div Occupat Environm & Climate Med, San Francisco, CA USA
[7] San Francisco VA Hlth Care Syst, Res Serv, San Francisco, CA USA