TY - STAND AU - L. McDonald AU - A. Schultze AU - R. Carroll AU - S. Ramagopalan BT - Eur J Epidemiol DO - 10.1007/s10654-018-0389-5 M1 - 6 PY - 2018 SP - 601 EP - 605 T2 - Eur J Epidemiol TI - Performing studies using the UK Clinical Practice Research Datalink: to link or not to link? VL - 33 SN - 0393-2990 ER -