TY - STAND AU - M. Pikoula AU - J. Quint AU - F. Nissen AU - H. Hemingway AU - L. Smeeth AU - S. Denaxas BT - BMC Med Inform Decis Mak DO - 10.1186/s12911-019-0805-0 M1 - 1 PY - 2019 EP - 86 T2 - BMC Med Inform Decis Mak TI - Identifying clinically important COPD sub-types using data-driven approaches in primary care population based electronic health records VL - 19 SN - 1472-6947 ER -