@article {S1, editor = {,}, title = {Acknowledgements}, volume = {2}, number = {Suppl 1}, pages = {S1--S1}, year = {1993}, doi = {10.1136/tc.2.suppl1.S1a}, publisher = {BMJ Publishing Group Ltd}, issn = {0964-4563}, URL = {https://tobaccocontrol.bmj.com/content/2/Suppl_1/S1.2}, eprint = {https://tobaccocontrol.bmj.com/content/2/Suppl_1/S1.2.full.pdf}, journal = {Tobacco Control} }