TY  - RPRT
TI  - Performance-based and self-reported physical functioning in low-functioning older persons: congruence of change and the impact of depressive symptoms.
AU  - G I Kempen
AU  - M Sullivan
AU  - E van Sonderen
AU  - J Ormel
PY  - 1999
DO  - 10.1093/geronb/54b.6.p380
UR  - https://pubmed.ncbi.nlm.nih.gov/10625966/
ID  - 10625966
ER  -