Risk Factors in Chronic Subdural Hematoma: Comparison of Irrigation with Artificial Cerebrospinal Fluid and Normal Saline in a Cohort AnalysisAdachi, Akihiko; Higuchi, Yoshinori; Fujikawa, Atsushi; Machida, Toshio; Sueyoshi, Shigeo; Harigaya, Kenichi; Ono, Junichi; Saeki, Naokatsu; Park, Paul · PLoS ONE · 2014