<style face="normal" font="default" size="100%">Hypothesis: solar ultraviolet radiation and the initial skin lesion of leprosy.</style>

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0<style face="normal" font="default" size="100%">Hypothesis: solar ultraviolet radiation and the initial skin lesion of leprosy.</style><style face="normal" font="default" size="100%">Hypothesis: solar ultraviolet radiation and the initial skin lesion of leprosy.</style>