Xu H, Kaye JA, Saltus CW, Crawford J, Gasa E, Goodnough LT. Blood utilization and hemoglobin levels in cancer patients after label and coverage changes for erythropoiesis-stimulating agents. Expert Rev Hematol. 2014 Oct;7(5):617-33. doi: 10.1586/17474086.2014.943730
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.