[1] Nihon Univ Hosp, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Tokyo, Japan
[2] Aomori Prefectural Cent Hosp, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Aomori, Japan
[3] Natl Cerebral & Cardiovasc Ctr, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Osaka, Japan
[4] Shizuoka Prefectural Gen Hosp, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Shizuoka, Japan
[5] Kyoto Univ, Sch Publ Hlth, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Kyoto, Japan
[6] Thomas Jefferson Univ, Sidney Kimmel Med Coll, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Philadelphia, PA 19107 USA
[7] Kawasaki Saiwai Hosp, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Kawasaki, Kanagawa, Japan
[8] Nihon Univ Hosp, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Tokyo, Japan
[9] Kawaguchi Municipal Med Ctr, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Saitama, Japan
[10] Fukuoka Univ, Sch Med, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Fukuoka, Japan
[11] Tohoku Univ, Sch Med, Japanese Circulat Soc Resuscitat Sci Study JCS Re, Sendai, Miyagi, Japan