Effects of menstrual cycle on periodontal health and gingival crevicular fluid markers. Our authors: Celec Peter All authors: Becerik S, Ozçaka O, Nalbantsoy A, Atilla G, Celec P, Behuliak M, Emingil G Journal of Periodontology, 81 (5): 673-81, 2010 http://www.joponline.org/doi/pdf/10.1902/jop.2010.090590