[1] Univ Calgary, Alberta Childrens Hosp, Dept Pediat, 2888 Shaganappi Trail NW, Calgary, AB T3B 6A8, Canada
[2] Drexel Univ, Nurse Practitioner Programs, Philadelphia, PA 19104 USA
[3] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Ctr Med Simulat, Boston, MA USA
[4] Ann & Robert H Lurie Childrens Hosp Chicago, Northwestern Feinberg Sch Med, Dept Pediat & Med Educ, Chicago, IL 60611 USA
[5] King Abdulaziz Univ, Coll Med, Dept Anesthesia & Crit Care, Jeddah 21413, Saudi Arabia
[6] Royal Free Hosp NHS Fdn Trust, Dept Pediat, London, England