TY  - RPRT
TI  - The General Practice Morbidity Database Project Wales--a methodology for primary care data extraction.
AU  - J Evans
AU  - C Rogers
AU  - S Kaul
DO  - 10.3109/14639239709010891
UR  - https://pubmed.ncbi.nlm.nih.gov/9304564/
ID  - 9304564
ER  -