TY - JOUR T1 - Prevalence of frailty in 62 countries across the world: A systematic review and meta-analysis of population-level studies AU - O'Caoimh, Ronan AU - Sezgin, Duygu AU - O'Donovan, Mark R. AU - Molloy, D. William AU - Clegg, Andrew AU - Rockwood, Kenneth AU - Liew, Aaron PY - 2020 DO - 10.1093/ageing/afaa219 JO - Age and Ageing SN - 0002-0729 ER -