Assessing severity of illness and outcomes of treatment in children with Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME): a systematic review of patient‐reported outcome measures (PROMs)
1. Royal College of Nursing Research Institute, Warwick Medical School, University of Warwick, , Coventry, UK;2. Centre for Child & Adolescent Health, University of Bristol, , Bristol, UK