TY - STAND AU - N. Alexander AU - D. Alexander AU - F. Barkhof AU - S. Denaxas BT - BMC Med Inform Decis Mak DO - 10.1186/s12911-021-01693-6 M1 - 1 PY - 2021 EP - 343 T2 - BMC Med Inform Decis Mak TI - Identifying and evaluating clinical subtypes of Alzheimer\textquoterights disease in care electronic health records using unsupervised machine learning VL - 21 SN - 1472-6947 ER -