Scientific and ethical approaches for observational exposure studies / Alain E. Hughes, editor - New York : Nova Science Publishers, 2010 - 235 p. : ill. ; 24 cm. - Public health in the 21st century . - Public health in the 21st century . ISBN: 9781608760343 RM245.91 Subjects--Topical Terms: Human experimentationResearchEthicsMoral National Library of Medicine Call No.: W20.5 / .S416 2010 9HUKM