TY - JOUR AU - T Usherwood BT - BMC Family Practice PY - 2020 EP - 36 T2 - BMC Family Practice TI - QUality improvement in primary care to prevent hospitalisations and improve Effectiveness and efficiency of care for people Living with coronary heart disease (QUEL): Protocol for a 24-month cluster randomised controlled trial in primary care VL - 21 ER -