Packer, R J, Shrine, N, Hall, R, Melbourne, C A, Thompson, R, Williams, A T, Paynton, M L, Guyatt, A L, Allen, R J, Lee, P H, John, C, Campbell, A, Hayward, C, de Vries, M, Vonk, J M, Davitte, J, Hessel, E, Michalovich, D, Betts, J C, Sayers, I, Yeo, A, Hall, I P, Tobin, M D & Wain, L V 2023, ' Genome-wide association study of chronic sputum production implicates loci involved in mucus production and infection ', European Respiratory Journal . https://doi.org/10.1183/13993003.01667-2022