Medical University of Vienna - Section for Outcomes Research, Medical University of Vienna - Section for Outcomes Research, Medical University of Vienna - Section for Outcomes Research, Medical University of Vienna - Section for Outcomes Research, University of British Columbia - Department of Physical Therapy, University of British Columbia - Department of Physical Therapy, University of Magdalena - Faculty of Health Science, University of Sheffield - Unit of Oral Health, Griffith University - School of Applied Psychology, University of Social Welfare and Rehabilitation Sciences - Department of Nursing, University of Michigan at Ann Arbor - Department of Physical Medicine and Rehabilitation, Universidade de Coimbra - Centro Hospitalar, Dietology Austria, The Cyprus League Against Rheumatism and Platform Organization for People for Rheumatic Diseases in Southern Europe, Childrens Hospital Los Angeles, Diakonhjemmet Hospital - 3Department of Rheumatology, UCLA Health System - Department of Radiation Oncology, University of Michigan at Ann Arbor - Department of Physical Medicine and Rehabilitation, University of Johannesburg - Department of Podiatry, Medical University of Vienna - Section for Outcomes Research, University of North Carolina at Chapel Hill - Division of Pediatric and Public Health, Savvy Cooperative and Danube University Krems - Department for Evidencebased Medicine and Evaluation

Division of Pediatric Nephrology and Gastroenterology, Comprehensive Center for Pediatrics, Medical University of Vienna, Medical University of Vienna - Section for Outcomes Research, Medical University of Vienna - Section for Outcomes Research, Research Platform Data Science, University of Vienna, Pediatric Nephrology, Center for Child and Adolescent Medicine, Department of Pediatric Nephrology, University Hospital Vall d’ Hebron, Divisions of Pediatric Nephrology, Gazi University Faculty of Medicine, Pediatric Center, Institute of Clinical Medicine, Vilnius University, Department of Pediatric Nephrology, KfH Children’s Kidney Center, Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Pediatric Nephrology, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Renal Unit, UCL Great Ormond Street Hospital for Children NHS Foundation Trust, and Institute of Child Health, Department of Pediatric Nephrology, Mitera Children's Hospital, Department of Pediatric Nephrology, Utoped, Universitair Ziekenhuis Gent, Dialysis Unit, Department of Pediatrics, IRCCS Giannina Gaslini, Department of Pediatric Nephrology, University Hospital Motol, Department of Pediatric Nephrology, Medical University of Gdansk, Massachusetts Institute of Technology and Harvard University - Broad Institute and Medical University of Vienna - Division of Pediatric Nephrology and Gastroenterology