Correction
The title of the original publication [1] had an error; furthermore there were errors in Fig. 2. The corrected version of the title and of Fig. 2 (Additional file 1 here) can be found below in this Erratum.
Incorrect title:
Anzeige
Reduced nicotine content cigarettes in smokers of low socioeconomic status: study protocol for a randomized control trial
Correct title:
Reduced nicotine content cigarettes in smokers of low socioeconomic status: study protocol for a randomized controlled trial
Error in Fig. 2:
Anzeige
The study week and study day numbers at the top of the figure should match up with the numbers at the bottom of the figure.
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.