Toxicological  trivia from September 16: According to a multicenter descriptive exploratory study with retrospective data collection from secondary sources in 7 Poison Control Centers in Argentina, covering all cases (N = 290) of personal contacts (ambulatory and boarding schools) who consulted between 01/01/1998 and 31/12/1999, the main chemical group involved was:
a) Organophosphates;
b) warfarin and coumarin;
c) Pyrethroids.

Answer a.The major chemical groups involved were: organophosphorus (35.5%), coumarin (32.4%) and pyrethroid (23.0%). Read more in Spanish  "Poisoning with pesticides".