Yrjölä, H., Silvennoinen, T., Vilppula, E., & Ahlström-Bengs, E. (1988). Intravenous indomethacin for postoperative pain A double-blind study of ankle surgery. Acta Orthopaedica, 59(1), 43–45. https://doi.org/10.3109/17453678809149342