[1] Univ Zurich, Univ Hosp Zurich, Dept Consultat Liaison Psychiat & Psychosomat Med, Zurich, Switzerland
[2] Univ Plymouth, Fac Hlth, Plymouth, England
[3] Univ Basel, Fac Psychol, Div Clin Psychol & Psychotherapy, Basel, Switzerland
[4] Univ Basel, Fac Psychol, Div Clin Psychol & Anim Assisted Intervent, Basel, Switzerland
[5] Swiss Trop & Publ Hlth Inst, Dept Epidemiol & Publ Hlth, Allschwil, Switzerland
[6] Open Univ, Fac Psychol, Heerlen, Netherlands
[7] Interdisciplinary Pain Consultat Child & Adolescen, Binningen, Switzerland
[8] Univ Childrens Hosp Zurich, Dept Psychosomat & Psychiat, Zurich, Switzerland
[9] Univ Zurich, Dept Psychol, Div Child & Adolescent Hlth Psychol, Zurich, Switzerland
[10] Harvard Med Sch, Boston Childrens Hosp, Dept Anesthesiol Crit Care & Pain Med, Boston, MA 02115 USA