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Inagaki, Takanori; Hoshino, Makoto; Hayakawa, Tomihiro; Ohara, Hirotaka; Yamada, Tamaki; Yamada, Hisashi; Iida, Masayuki; Nakazawa, Takahiro; Ogasawara, Tetsuya; Uchida, Atsuo; Hasegawa, Chihiro; Miyaji, Makoto; Takeuchi, Toshihiko . (1997). Interleukin-6 Is a Useful Marker for Early Prediction of the Severity of Acute Pancreatitis. Pancreas, 14(1), 1–8. doi:10.1097/00006676-199701000-00001 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research