Prescribed opioids in primary care: cross-sectional and longitudinal analyses of influence of patient and practice characteristics
Robbie Foy, Ben Leaman, Carolyn McCrorie, Duncan Petty, Allan House, Michael Bennett, Paul Carder, Simon Faulkner, Liz Glidewell, Robert West
BMJ Open May 2016, 6 (5) e010276; DOI: 10.1136/bmjopen-2015-010276