N Kawai

[Evaluation of the recording method of phonocardiogram. Use of a simultaneous and multi-filter recording system].

H Ueda, Z Uozumi, T Yamada, 1966, Naika. Internal medicine.

[Estimation of left ventricular systolic function based on the electrocardiograms in cases with left bundle branch block].

N Kawai, T. Sawayama, N. Kawai, 1998, Journal of cardiology.

New electrocardiographic criteria for diagnosing right ventricular hypertrophy in mitral stenosis--comparison with the Bonner's and Mortara's criteria.

N Kawai, K. Inoue, T. Sawayama, 1988, Japanese circulation journal.