Martinez-Lopez, J I Tripartite block. [electronic resource] - The Journal of the Louisiana State Medical Society : official organ of the Louisiana State Medical Society Mar 1987 - 5, 7-8 p. digital Publication Type: Case Reports; Journal Article ISSN: 0024-6921 Subjects--Topical Terms: AgedElectrocardiographyFemaleHeart Block--diagnosisHumans