- A case report of isolated levocardia without intracardiac anomalies associated with sick sinus syndrome. Fukuzawa, J., Haneda, T., Ishii, Y., Kawashima, E., Ogawa, Y., Matsuhashi, H., Kawamura, Y., Imamoto, T., Tobise, K., Onodera, S. Jpn. Circ. J. (1993)