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Supplementary Movie 1. Fluoroscopy showing the giant swing motion before repositioning. Supplementary Movie 2. Fluoroscopy showing the decrease of the pendulum motion after repositioning. Please find supplementary file(s); http://dx.doi:10.1253/circj.cj-18-1039 pmid:30905892 fatcat:ormhnicsi5blbcyr47polcu3fu