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
Williams RE, Bosnic N, Sweeney CT, Duncan AW, Levine KB, Brogan M, Cook SF. Prevalence of opioid dispensings and concurrent gastrointestinal medications in Quebec. Pain Res Manag. 2008;13(5):395-400.