TY - RPRT TI - Vectorcardiograms in aortic and mitral regurgitation -- a comparative study. AU - M Motomura AU - T Hoshino AU - G Tomonaga AU - S Morioka AU - Y Shimono PY - 1977 DO - 10.1253/jcj.41.983 UR - https://pubmed.ncbi.nlm.nih.gov/916157/ ID - 916157 ER -