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Clinical trials registration.
Tiffin NH, Nickerson J. Tiffin NH, et al. Can J Respir Ther. 2013 Winter;49(4):20. Can J Respir Ther. 2013. PMID: 26078598 Free PMC article. No abstract available.
Why do we still permit tobacco use?
Tiffin NH. Tiffin NH. Can J Respir Ther. 2015 Fall;51(4):85. Can J Respir Ther. 2015. PMID: 26566377 Free PMC article. No abstract available.