BILLU, C.; NELATURU, H.; PALLIKONDA, S. S.; TAANGUTURI, J.; UDATHA, T.; M, S.; Y, P. C. Cost effectiveness of therapeutic care of chronic obstructive pulmonary disease (copd) patients in tertiary hospitals. International Journal of Health Care and Biological Sciences, v. 6, n. 3, p. 4-8, 28 Aug. 2025.