Effectiveness of...Effectiveness of hospital clowns for symptom management in paediatrics: systematic review of randomised and non-randomised controlled trials;, , , , , , , , 1Federal University of Espírito Santo, Avenida Marechal Campus, 1468 Maruípe, Vitória, 29.043-900, ES, Brazil2University of Saskatchewan, College of Medicine, Saskatoon, SK, Canada3University of Alberta, Edmonton, AB, Canada4Federal University of Santa Maria, Santa Maria, RS, Brazil5Federal Institute of Espírito Santo, Linhares, ES, Brazil6Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil7University of São...…Effectiveness of...Effectiveness of hospital clowns for symptom management in paediatrics: systematic review of randomised and non-randomised controlled trials;, , , , , , , , 1Federal University of Espírito Santo, Avenida Marechal Campus, 1468 Maruípe, Vitória, 29.043-900, ES, Brazil2University of Saskatchewan, College of Medicine, Saskatoon, SK, Canada3University of Alberta, Edmonton, AB, Canada4Federal University of Santa Maria, Santa Maria, RS, Brazil5Federal Institute of Espírito Santo, Linhares, ES, Brazil6Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil7University of São...WW…