<style face="normal" font="default" size="100%">[Problems in designing a protocol for a leprosy vaccine trial. (author's transl)].</style>

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0<style face="normal" font="default" size="100%">[Problems in designing a protocol for a leprosy vaccine trial. (author's transl)].</style><style face="normal" font="default" size="100%">[Problems in designing a protocol for a leprosy vaccine trial. (author's transl)].</style>