Hulathduwa, S. R., and B. P. Wijesinghe. “PULMONARY THROMBO-EMBOLISM: DIFFICULTIES ENCOUNTERED IN ESTABLISHING CAUSAL RELATIONSHIP AND EXCLUDING THERAPEUTIC MISMANAGEMENT-A CASE REPORT”. International Journal of Research -GRANTHAALAYAH, vol. 9, no. 4, Apr. 2021, pp. 150-6, doi:10.29121/granthaalayah.v9.i4.2021.3838.