. 2008 May 24;5:19. doi: 10.1186/1477-7517-5-19
Copyright © 2008 Sajid et al; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 3.
Traditional Hookah Smoking in Pakistan. © Sajid KM.