Posterior lumbar interbody fusion for dysplastic lumbar spondylolisthesis with high-grade slippage in two adolescent siblings: two case reports. - Tatsumura, Masaki; Funayama, Toru; Eto, Fumihiko; Nagashima, Katsuya; Takeuchi, Yosuke; Yamazaki, Masashi (Journal of Medical Case Reports, 2022)