TY - STAND AU - A. Mitchell AU - T. Welsh AU - M. Watson AU - J. Snowball AU - A. McGrogan BT - BMJ Open DO - 10.1136/bmjopen-2019-032646 M1 - 12 PY - 2019 EP - e032646 T2 - BMJ Open TI - Use of oral anticoagulants in older people with atrial fibrillation in UK general practice: protocol for a cohort study using the Clinical Practice Research Datalink (CPRD) database VL - 9 SN - 2044-6055 ER -