Wakefield Melanie A, Terry-McElrath Yvonne M, Chaloupka Frank J, Barker Dianne C, Slater Sandy J, Clark Pamela I, Giovino Gary A
Center for Behavioral Research in Cancer, Anti-Cancer Council of Victoria, Melbourne, Victoria, Australia.
Am J Public Health. 2002 Jun;92(6):937-40. doi: 10.2105/ajph.92.6.937.