Arain, Sadaf S Estimation of Nickel in Different Smokeless Tobacco Products and Their Impact on Human Health of Oral Cancer Patients. [electronic resource] - Nutrition and cancer 2015 - 1063-74 p. digital Publication Type: Journal Article ISSN: 1532-7914 Standard No.: 10.1080/01635581.2015.1073758 doi Subjects--Topical Terms: AdultCase-Control StudiesFemaleHair--chemistryHumansMaleMiddle AgedMouth Neoplasms--chemically inducedNickel--analysisPakistan--epidemiologySocioeconomic FactorsSpectrophotometry, AtomicTobacco, Smokeless--analysis