Amiodarone-induced reversible and irreversible hepatotoxicity: two case reports oleh Toyonobu Tsuda, Hayato Tada, Yoshihiro Tanaka, Naoto Nishida, Taiji Yoshida, Takeshi Sawada, Kenji Sakata, Kenshi Hayashi, Masa-aki Kawashiri, Takeru Oyama, Motoko Sasaki, Nozomu Kurose, Masakazu Yamagishi