title: Friendship networks and trajectories of adolescent tobacco use.
authors.affiliation: RAND Corporation, 1776 Main Street, P.O. Box 2138, Santa Monica, CA 90407-2138, USA. mpollard@rand.org
authors.forename: Michael S
authors.initials: MS
authors.lastname: Pollard
authors.forename: Joan S
authors.initials: JS
authors.lastname: Tucker
authors.forename: Harold D
authors.initials: HD
authors.lastname: Green
authors.forename: David
authors.initials: D
authors.lastname: Kennedy
authors.forename: Myong-Hyun
authors.initials: MH
authors.lastname: Go