TY - JOUR AU - Andersohn, F; Walker, J TI - Characteristics and external validity of the German Health Risk Institute (HRI) database JO - Pharmacoepidemiology and drug safety VL - 25 PY - 2016 DO - 10.1002/pds.3895 L3 - PubMed-ID: 26530279 SP - 106 EP - 109 ER -