[1] MASSACHUSETTS POISON CONTROL SYST, 300 LONGWOOD AVE, BOSTON, MA 02115 USA
[2] CHILDRENS HOSP MED CTR, DIV CLIN PHARMACOL & TOXICOL, BOSTON, MA 02115 USA
[3] CHILDRENS HOSP MED CTR, DIV EMERGENCY MED, BOSTON, MA 02115 USA
[4] HARVARD UNIV, SCH MED, DEPT PEDIAT, BOSTON, MA 02115 USA