TY - STAND AU - R. Mathur AU - K. Bhaskaran AU - N. Chaturvedi AU - D. Leon AU - T. vanStaa AU - E. Grundy AU - L. Smeeth BT - J Public Health (Oxf) DO - 10.1093/pubmed/fdt116 M1 - 4 PY - 2014 SP - 684 EP - 92 T2 - J Public Health (Oxf) TI - Completeness and usability of ethnicity data in UK-based primary care and hospital databases VL - 36 SN - 1741-3842 ER -