Vitamin D Supplementation in Infertile Men: Beyond Pooled Effects—A Critical Meta-Analysis of Heterogeneous Clinical Responses - Dragoș Puia; Marius Ivănuță; Mihaela Corlade-Andrei; Hicham Tory; Adrian-Gabriel Majeru; Bogdan Doroftei; Ramona Ștefăniu; Vlad Cristiana Elena; Cătălin Pricop (Endocrines, 2026)