@techreport{NBERw12803,
 title = "Black Box Warnings and Drug Safety: Examining the Determinants and Timing of FDA Warning Labels",
 author = "Allan Begosh and John Goldsmith and Ed Hass and Randall W. Lutter and Clark Nardinelli and John A. Vernon",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12803",
 year = "2006",
 month = "December",
 URL = "http://www.nber.org/papers/w12803",
}