Physical Function Impairment and Frailty in Middle-Aged People Living With Human Immunodeficiency Virus in the REPRIEVE Trial Ancillary Study PREPARE. - Umbleja, Triin; Brown, Todd T; Overton, Edgar T; Ribaudo, Heather J; Schrack, Jennifer A; Fitch, Kathleen V; Douglas, Pamela S; Grinspoon, Steven K; Henn, Sarah; Arduino, Roberto C; Rodriguez, Benigno; Benson, Constance A; et al. (Journal of Infectious Diseases, 2020)