1. Department of Pediatric, Institute of Pediatrics of Southern Switzerland, Ente Ospedaliero Cantonale, 6500 Bellinzona, Switzerland
2. Department of Anesthesia, Institute of Pediatrics of Southern Switzerland, Ente Ospedaliero Cantonale, 6500 Bellinzona, Switzerland
3. Department of Health Professions, Applied Research & Development in Nursing, Bern University of Applied Sciences, 3010 Bern, Switzerland
4. School of Nursing Science, Faculty of Health, Department of Nursing Science, Witten/Herdecke University, 58455 Witten, Germany
5. Department of Pediatric Surgery, Institute of Pediatrics of Southern Switzerland, Ente Ospedaliero Cantonale, 6500 Bellinzona, Switzerland