20.
Akbari G, Prabhuji ML, Karthikeyan BV, et al. (2015): Analysis of matrix metalloproteinase-8 levels in gingival crevicular fluid and whole mouth fluid among smokers and nonsmokers using enzyme-linked immune-sorbent assay and a novel chair-side test. J Indian Soc Periodontol 19: 525-530.