BMC Cancer 2009, 9:421 http://www.biomedcentral.com/1471-2407/9/421 27. Shimanuki Y, Takahashi K, Cui R, Hori S, Takahashi F, Miyamoto H, Fukurchi Y: Role of serum vascular endothelial growth factor in the prediction of angiogenesis and prognosis for non-small cell lung cancer. Lung 2005, 183:29-42. 28. Park JH, Choi H, Kim YB, Kim YS, Sheen SS, Choi JH, Lee HL, Lee KS, Chung WY, Lee S, Park KJ, Hwang SC, Lee KB, Park KJ: Serum angi- opoietin-1 as a prognostic marker in resected early stage lung cancer. Lung Cancer 2009, 66:359-364. 29. Kaminska J, Kowalska M, Kotowicz B, Fuksiewicz M, Glogowski M, Wojcik E, Chechlinska M, Steffen J: Pretreatment serum levels of cytokines and cytokine receptors in patients with non-small cell lung cancer, and correlations with clinicopathological features and prognosis. M-CSF - an independent prognostic factor. Oncology 2006, 70:115-125. Pre-publication history The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2407/9/421/pre pub Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 12 of 12 (page number not for citation purposes)