TY - JOUR AU - Rich, S; Kaufmann, E; Levy, P S TI - The effect of high doses of calcium-channel blockers on survival in primary pulmonary hypertension JO - N Engl J Med IS - 02 VL - 327 PY - 1992 DO - 10.1056/NEJM199207093270203 L3 - PubMed-ID: 1603139 SP - 76 EP - 81 ER -