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The total QRS duration.
BLACKBURN HW Jr, SIMONSON E. BLACKBURN HW Jr, et al. Am Heart J. 1957 May;53(5):699-710. doi: 10.1016/0002-8703(57)90339-3. Am Heart J. 1957. PMID: 13410783 No abstract available.
Probability of middle-aged men developing coronary heart disease in five years.
Keys A, Aravanis C, Blackburn H, Van Buchem FS, Buzina R, Djordjevic BS, Fidanza F, Karvonen MJ, Menotti A, Puddu V, Taylor HL. Keys A, et al. Among authors: blackburn h. Circulation. 1972 Apr;45(4):815-28. doi: 10.1161/01.cir.45.4.815. Circulation. 1972. PMID: 5016014 No abstract available.
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