Smoking, Porphyromonas gingivalis and the immune response to citrullinated autoantigens before the clinical onset of rheumatoid arthritis in a Southern European nested case-control study.

Fisher BA, Cartwright AJ, Quirke AM, de Pablo P, Romaguera D, Panico S, Mattiello A, Gavrila D, Navarro C, Sacerdote C, Vineis P, Tumino R, Lappin DF, Apazidou D, Culshaw S, Potempa J, Michaud DS, Riboli E, Venables PJ.

BMC Musculoskelet Disord 2015; 16: 331. (IF 1.717)

http://www.ncbi.nlm.nih.gov/pubmed/26537917