title: A survey of mouth level exposure to cigarette smoke in the United States.
authors.affiliation: R.J. Reynolds Tobacco Company, P.O. Box 1487, Winston-Salem, NC 27102-1487, USA. nelsonp@rjrt.com
authors.forename: Paul R
authors.initials: PR
authors.lastname: Nelson
authors.forename: Peter
authors.initials: P
authors.lastname: Chen
authors.forename: Mike
authors.initials: M
authors.lastname: Dixon
authors.forename: Thomas
authors.initials: T
authors.lastname: Steichen