Jo Kimber, Matthew Hickman, Louisa Degenhardt, Tim Coulson and Ingrid van Beek
Addiction 103 ( 10 ): 1604 - 1613 , 2008
John Macleod, Matthew Hickman, Erica Bowen, Rosa Alati, Kate Tilling and George Davey Smith
Addiction 103 ( 10 ): 1731 - 1743 , 2008