%0 Generic %B BMC Geriatr %D 2015 %P 146 %R 10.1186/s12877-015-0143-8 %T Any versus long-term prescribing of high risk medications in older people using 2012 Beers Criteria: results from three cross-sectional samples of primary care records for 2003/4, 2007/8 and 2011/12 %V 15