Tuberculosis and chronic hepatitis B virus infection in Africans and variation in the vitamin D receptor gene .
tuberculosis and chronic hepatitis b virus infection in africans and variation in the vitamin d receptor gene .
B-other_name O B-other_name B-virus I-virus I-virus O O B-multi_cell O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O