Yoichi Inokubo

Plasma levels of matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 are increased in the coronary circulation in patients with acute coronary syndrome.

H. Ishizaka, K. Okumura, K. Okumura, 2001, American heart journal.

Comparison of the effects of long-acting nifedipine CR and diltiazem R in patients with vasospastic angina: Aomori coronary spastic angina study.

K. Okumura, T. Osanai, Takeshi Kato, 2010, Journal of cardiology.