Impact of smoke-free ordinance strength on smoking prevalence and lung cancer incidence. oleh Ryan H Nguyen, Laura B Vater, Lava R Timsina, Gregory A Durm, Katelin Rupp, Keylee Wright, Miranda H Spitznagle, Brandy Paul, Shadia I Jalal, Lisa Carter-Harris, Karen S Hudmon, Nasser H Hanna, Patrick J Loehrer, DuyKhanh P Ceppa