Lung function and collagen 1a levels are associated with changes in 6 min walk test distance during treatment of TB among HIV-infected adults: a prospective cohort study oleh Yeonsoo Baik, Pholo Maenetje, Diana Schramm, Caroline Tiemessen, Itai Ncube, Gavin Churchyard, Robert Wallis, Mboyo-di-tamba Vangu, Hardy Kornfeld, Yun Li, Sara C. Auld, Gregory P. Bisson