Kumar, A. .; Nagarajappa, R. .; Ramesh, G. .; Chandra, V. .; Ahuja, R. .; Azad, A. . Evaluation of Lung Volume and Effect of Vital Staining As Motivation to Quit Tobacco Among Nicotine Dependents of Kanpur, India. Pesqui Bras Odontopediatria Clin Integr 2022, 22, e210102.