Summary of instruments by age. * Participant will only receive if allocated instrument based on disease group and/or randomization to receive additional instrument. Abbreviations: HRQoL health-related quality of life, SDQ Strengths and Difficulties Questionnaire, EQ-HWB EQ Health and Wellbeing Short Version, PedsQL Paediatric Quality of Life Inventory, TANDI Toddler and Infant Questionnaire, EQ-5D-Y EQ-5D Youth, CHU9D Child Health Utility, HUI2/3 Health Utilities Index Mark 2/3, EQ-5D-5L, AQoL-6D Assessment of Quality of Life, PROMIS-25 Patient-Reported Outcome Measurement Information System 25.