Calvin Hirsch Division of General Medicine, University of California, Davis, California, USA. Contacto: Division of General Medicine, University of California, Davis Medical Center, 4150 V Street, PSSB Suite 2400, Sacramento, CA 95817, USA; [chhirsch@ucdavis.edu] Comentario sobre: Sun Q, Townsend MK, Okereke OI et al. Physical activity at midlife in relation to successful survival in women at age 70 years or older. Arch Intern Med 2010; 170: 194?201 [[Abstract/FREE Full text]]. Sun y cols...