Evaluation of Salivary ?- Amylase Enzyme Activity in Smoker and Peptic Ulcer Patients Affected by Periodontitis in Relation to Clinical Periodontal Parameters. Indian Journal of Forensic Medicine & Toxicology 2020, 14 (4), 2349-2355. https://doi.org/10.37506/ijfmt.v14i4.11939.