Frequency of nursing home resident contact with staff, other residents, and the environment outside resident rooms. (20th May 2019) - Pineles, Lisa; Perencevich, Eli N.; Roghmann, Mary-Claire; Gupta, Kalpana; Cadena, Jose; Baracco, Gio; Pfeiffer, Christopher D.; Forrest, Graeme; Bradley, Suzanne F.; Crnich, Chris; Reisinger, Heather S.; Morgan, Daniel J.