Hulathduwa, S.R. and Wijesinghe, B.P. 2021. PULMONARY THROMBO-EMBOLISM: DIFFICULTIES ENCOUNTERED IN ESTABLISHING CAUSAL RELATIONSHIP AND EXCLUDING THERAPEUTIC MISMANAGEMENT-A CASE REPORT. International Journal of Research -GRANTHAALAYAH. 9, 4 (Apr. 2021), 150–160. DOI:https://doi.org/10.29121/granthaalayah.v9.i4.2021.3838.