Comparative Efficacy of Insect Repellents against Mosquito Bites - Research article in: The New England Journal of Medicine.
Fradin, M.S. and J.F. Day. Volume 347 (Number 1):13-18. July 4, 2002. From
the article: "When applied with common sense, DEET-based repellents can be
expected to provide a safe as well as a long-lasting repellent effect. Until
a better repellent becomes available, DEET-based repellents remain the gold
standard of protection under circumstances in which it is crucial to be protected
against arthropod bites that might transmit disease."