@misc{indiciae0406c135f632, title = {The UK General Practice Research Database.}, author = {T Walley and A Mantgani}, year = {1997}, doi = {10.1016/s0140-6736(97)04248-7}, url = {https://pubmed.ncbi.nlm.nih.gov/10213569/}, note = {Source identifier: 10213569} }