TY - GEN AU - Walloopillai,N J AU - Jayasinghe,M de S TI - Pulmonary hypertension of un-explained origin in Ceylon SN - 0009-0875 PY - 1970///0424 KW - Adolescent KW - Adult KW - Child KW - Child, Preschool KW - Female KW - Humans KW - Hypertension, Pulmonary KW - epidemiology KW - Male KW - Middle Aged KW - Sri Lanka N1 - Publication Type: Journal Article ER -