Qualitative study to support the content validity of the immune thrombocytopenia (ITP) Life Quality Index (ILQI). - Cooper, Nichola; Cuker, Adam; Bonner, Nicola; Ghanima, Waleed; Provan, Drew; Morgan, Mervyn; Taylor, Barbara; D'Alessio, Denise; Arnold, Donald; Viana, Ricardo (British Journal of Haematology, 2021)