The Impact of Preoperative Malnutrition on Postoperative Outcomes in Older Patients Undergoing Lumbar Decompression. - Taniguchi Y; Nakamoto H; Kato S; Nakarai H; Kono K; Saito Y; Inoue R; Okawa H; Tanaka S; Oshima Y; Fukatsu K (Cureus, 2025)