TY - JOUR T1 - Producing a preference-based quality of life measure for people with Duchenne muscular dystrophy: a mixed-methods study protocol. JO - BMJ Open PY - 2019/03/09 AU - Powell PA AU - Carlton J AU - Rowen D AU - Brazier JE ED - DO - DOI: 10.1136/bmjopen-2018-023685 VL - 9 IS - 3 SP - e023685 Y2 - 2025/01/13 ER -