[1] Oslo Univ Hosp, Dept Anaesthesiol, Norwegian Natl Advisory Unit Prehosp Emergency Ca, Oslo, Norway
[2] Univ Oslo, Oslo, Norway
[3] Oslo Univ Hosp, Neonatal Intens Care Unit, Oslo, Norway
[4] Oslo Univ Hosp, Dept Anaesthesiol, PB 4956, N-0424 Oslo, Norway
[5] Oslo Univ Hosp, Paediat Intens Care Unit, Oslo, Norway
[6] Univ Oslo, Akershus Univ Hosp, Dept Paediat & Adolescent Med, Lorenskog, Norway
[7] Univ Oslo, Akershus Univ Hosp, Inst Clin Med, Lorenskog, Norway
[8] Childrens Hosp Philadelphia, Ctr Simulat Adv Educ & Innovat, Philadelphia, PA 19104 USA
[9] Oslo Univ Hosp, Dept Anaesthesiol, Norwegian Natl Advisory Unit Prehosp Emergency Ca, Oslo, Norway