Whole-Body Cryotherapy at −90 °C for 9 Weeks: Effects on Immune Function, Stress, and Immune-Related and Vascular Blood Parameters in Healthy Adults—Results of an Exploratory One-Armed Pilot Study. - Aisenpreis, Punito Michael; Aisenpreis, Sibylle; Feisst, Manuel; Schleip, Robert (Journal of Clinical Medicine, 2026)