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Participants The participants completed a brief questionnaire on smoking behavior

Tob Control 20: ii29ii36.

In our study, the mice that only received nicotine showed a significant increase in immotile sperms and in situ sperms coupled with a significant decrease in the number of progressive sperms

Training aids may include video or computer based instruction, printed material and other forms deemed acceptable to the state

when using relative risks for ever smoking any product and for current and ex cigarette smoking) separate versions of the 2 2 (never/ever) and 2 3 (never/ex/current) tables were used, and the indirect estimate of the never smoker rate that is reported is that based on the never/ever comparison