TY - STAND AU - C. Salisbury AU - L. Johnson AU - S. Purdy AU - J. Valderas AU - A. Montgomery BT - Br J Gen Pract DO - 10.3399/bjgp11X548929 M1 - 582 PY - 2011 SP - 12 EP - 21 T2 - Br J Gen Pract TI - Epidemiology and impact of multimorbidity in primary care: a retrospective cohort study VL - 61 SN - 0960-1643 ER -