<style face="normal" font="default" size="100%">Physical activity: protective against hip fracture among frail older people</style>

Drupal-Bibcite

31<style face="normal" font="default" size="100%">Physical activity: protective against hip fracture among frail older people</style><style face="normal" font="default" size="100%">Physical activity: protective against hip fracture among frail older people</style>