Janssens R, Lang T, Vallejo A, Galinsky J, Plate A, Morgan K, Cabezudo E, Silvennoinen R, Coriu D, Badelita S, Irimia R, Anttonen M, Manninen RL, Schoefs E, Vandebroek M, Vanhellemont A, Delforge M, Stevens H, Simoens S, Huys I. Patient preferences for multiple myeloma treatments: a multinational qualitative study. Front Med (Lausanne). 2021 Jul 6;8:686165. doi: 10.3389/fmed.2021.686165
Derby CA, Araujo AB, Johannes CB, Feldman HA, McKinlay JB. Measurement of erectile dysfunction in population-based studies: the use of a single question self-assessment in the Massachusetts Male Aging Study. Int J Impot Res. 2000 Aug 1;12(4):197-204.