@article{0b13078d711443c48be5882f0c2517b4,
title = "Elevation of sputum matrix metalloproteinase-9 persists up to 6 months after smoking cessation: a research study",
keywords = "3121 General medicine, internal medicine and other clinical medicine",
author = "Noora Louhelainen and Harri Stark and Witold Mazur and Paula Rytila and Ratko Djukanovic and Kinnula, {Vuokko L.}",
year = "2010",
doi = "10.1186/1471-2466-10-13",
language = "English",
volume = "10",
journal = "BMC Pulmonary Medicine",
issn = "1471-2466",
publisher = "BMC",
}