RT Journal A1 Brown N T1 COrrections in article on sino-atrial block JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1919 FD November 1 VO 24 IS 5 SP 580 OP 580 DO 10.1001/archinte.1919.00090280111015 UL http://dx.doi.org/10.1001/archinte.1919.00090280111015 AB Line 18: "Fig. 12" should read "Fig. 13."