title: Invited commentary: Considering bias in the assessment of respiratory symptoms among residents of Lower Manhattan following the events of September 11, 2001.
authors.affiliation: Center for Urban Epidemiologic Studies, New York Academy of Medicine, New York, NY 10029, USA. dvlahov@nyam.org
authors.forename: David
authors.initials: D
authors.lastname: Vlahov
authors.forename: Sandro
authors.initials: S
authors.lastname: Galea
mesh_terms: D015982:Bias; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D009519:New York City / Q000453:epidemiology; D017063:Outcome Assessment, Health Care; D012140:Respiratory Tract Diseases / Q000453:epidemiology*; D047851:September 11 Terrorist Attacks; D014504:Urban Health