38770document8253aecopd_codes.txttext/plaine48563e07f113f6c781e7f99ce437b866cd27b0e49d76a7089bc68b40e6b3ffaSHA2561502020-03-20 10:46:04https://datacompass.lshtm.ac.uk/id/eprint/1653/1/aecopd_codes.txt