Correction: Quitting smoking

In the article "Quitting smoking: Still a challenge, but newer tools show promise," (Collins GB, Jerry JM, Bales R. Cleve Clin J Med 2015; 82:39-48), the reference sequencing has been corrected.

In the article "Quitting smoking: Still a challenge, but newer tools show promise," (Collins GB, Jerry JM, Bales R. Cleve Clin J Med 2015; 82:39-48), the reference sequencing has been corrected.

In the article "Quitting smoking: Still a challenge, but newer tools show promise," (Collins GB, Jerry JM, Bales R. Cleve Clin J Med 2015; 82:39-48), the reference sequencing has been corrected.