<style face="normal" font="default" size="100%">Hepatitis B surface antigen (HBsAg) in leprosy patients of Calcutta: its prevalence and subtypes.</style>

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0<style face="normal" font="default" size="100%">Hepatitis B surface antigen (HBsAg) in leprosy patients of Calcutta: its prevalence and subtypes.</style><style face="normal" font="default" size="100%">Hepatitis B surface antigen (HBsAg) in leprosy patients of Calcutta: its prevalence and subtypes.</style>