@misc{indiciae425663140ec3, title = {"Smoke-free Class Competition": far-reaching conclusions based on weak data.}, author = {Reiner Hanewinkel and Gudrun Wiborg and Barbara Isensee and Manel Nebot and Erkki Vartiainen}, year = {2006}, doi = {10.1016/j.ypmed.2006.03.015}, url = {https://pubmed.ncbi.nlm.nih.gov/16675005/}, note = {Source identifier: 16675005} }