TI - ERythrol tetranitrate in angina pectoris PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {562}, VI - 112 IP - 6 AID - 10.1001/jama.1939.02800060078019 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800060078019 SO - Journal of the American Medical Association February 11, 1939 112(6):562