Gomez-Cabello,A. Pedrero-Chamizo,R. Olivares,P. R. Luzardo,L. Juez-Bengoechea,A. Mata,E. Albers,U. Aznar,S. Villa,G. Espino,L. Gusi,N. Gonzalez-Gross,M. Casajus,J. A. Ara,I. Prevalence of overweight and obesity in non-institutionalized people aged 65 or over from Spain: The elderly EXERNET multi-centre study Obes. rev. 10.1111/j.1467-789X.2011.00878.x 2011 2011