An elite triathlete with high-grade isthmic spondylolisthesis treated by lumbar decompression surgery without fusion - Takeuchi, M.; Chikawa, T.; Hibino, N.; Takahashi, Y.; Yamasaki, Y.; Momota, K.; Henmi, T.; Maeda, T.; Sairyo, K. (NMC Case Report Journal, 2020)