Socio-demographic determinants of worsening in frailty among community-dwelling older people in 11 European countries
Astrid Etman, Alex Burdorf, Tischa J M Van der Cammen, Johan P Mackenbach, Frank J Van Lenthe
J Epidemiol Community Health Dec 2012, 66 (12) 1116-1121; DOI: 10.1136/jech-2011-200027
