Most devastatingly, however, there are no randomized, double-blinded placebo controlled clinical trials that compare the success of quitting smoking by using smokeless tobacco versus using a placebo.

  • 然而,极具讽刺的是,通过使用无烟烟草戒烟与使用安慰对照组相比,临床对照控制组没有进行随机的双盲试验。

  • 互联网摘选 2026-07-01 13:09:48

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