Pervez, Hassan, et al. “A Cofactor-Integrated Vitamin D3 Optimization Model Using ACTIVIT D and ACTIVIT Multivitamin–Multimineral by (Doctors prescribed): An Experimental Multisystem Analysis Across Medical Specialties”. History of Medicine, vol. 12, no. 1, May 2026, pp. 194-12, https://doi.org/10.48047/HM.V12.I1.2026.194-212.