Hillmen P, Xie J, Yong A, Waweru C, Sorof TA, Goyal RK, Davis KL. Real-world treatment patterns, adverse events and clinical outcomes in patients with chronic lymphocytic leukaemia treated with ibrutinib in the UK. EJHaem. 2021 May;2(2):219-27. doi: 10.1002/jha2.174
McKenna S, Doward LC. Measuring quality of life in ankylosing spondylitis. Best Pract Res Clin Rheumatol. 2008 Jan 1;6(2):12-4.