Work ability of healthcare workers: diferences between younger and older employe - Fischer, Frida Marina; Rotenberg, Lúcia; Landsbergis, P.; Griep, Rosane H; Tanaka, Luiza Hiromi; Soares, Nilson S; Santa Rosa, P. L. F.; Latorre, Maria do Rosário Dias de Oliveira; Teixeira, Liliane Reis; Borges, Flávio Notarnicola da Silva (International Symposium Satellite to ICOH, 2006)