Merup, M., Åberg, W., Löfvenberg, E., Svensson, E., Engman, K., Paul, C., & Gardulf, A. (2002). Symptoms, Symptom Distress and Health-related Quality of Life in Patients with Polycythaemia Vera or Essential Thrombocythaemia during Treatment with Interferon-alpha. Acta Oncologica, 41(1), 50–55. https://doi.org/10.1080/028418602317314064