[1] Univ Helsinki, Hosp Children & Adolescents, Helsinki 00029, Finland
[2] Univ Helsinki, Dept Clin Pharmacol, Helsinki 00029, Finland
[3] Univ Helsinki, Cent Hosp, Poison Informat Ctr, Helsinki 00029, Finland
[4] Botswana Baylor Childrens Clin Ctr Excellence, Gaborone, Botswana
[5] Buenos Aires Childrens Hosp R Gutierrez, Buenos Aires, DF, Argentina
[6] Univ New S Wales, Paediat Therapeut Program, Sch Womens & Childrens Hlth, Sydney, NSW, Australia
[7] Sydney Childrens Hosp, Sydney, NSW, Australia
[8] Univ Missouri, Dept Pediat, Kansas City, MO 64110 USA
[9] Univ Missouri, Dept Pharmacol, Kansas City, MO 64110 USA
[10] Childrens Mercy Hosp, Div Pediat Pharmacol & Med Toxicol, Kansas City, MO 64108 USA
[11] Natl Ctr Child Hlth & Dev, Clin Res Ctr, Div Clin Trials, Tokyo, Japan
[12] Univ British Columbia, Dept Pediat, Fac Med, Vancouver, BC V6T 1W5, Canada
[13] Univ Colombo, Fac Med, Dept Pharmacol, Colombo, Sri Lanka
[14] Sophia Childrens Univ Hosp, Erasmus MC, Rotterdam, Netherlands