TY - RPRT TI - Decrease in pulmonary artery pressure with slow release nifedipine in Saudi patients with primary pulmonary hypertension. AU - P A Ribeiro AU - V Sivanandan AU - A Shaikh AU - W Chalak AU - L Zaman AU - C M Duran PY - 1991 UR - https://pubmed.ncbi.nlm.nih.gov/1910877/ ID - 1910877 ER -