title: A need to study the immune status of frail older adults.
authors.affiliation: Geriatric Research, Education and Clinical Center (GRECC), VA Greater Los Angeles Healthcare System and Multicampus Division of Geriatric and Gerontology, Department of Medicine, UCLA, Los Angeles, CA 90073, USA. steven.castle@med.va.gov
authors.forename: Steven C
authors.initials: SC
authors.lastname: Castle
authors.forename: Koichi
authors.initials: K
authors.lastname: Uyemura
authors.forename: Tamas
authors.initials: T
authors.lastname: Fulop
authors.forename: Katsuiku
authors.initials: K
authors.lastname: Hirokawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Makinodan