Faheem Ullah, Khanasa Kiani, Maham Khalid, Maryum Saeed Hashmi, Sayed Khan, and Erum Tariq, “BIOCHEMICAL AND PHYSIOLOGICAL EFFECTS OF VITAMIN D SUPPLEMENTATION ON IMMUNE RESPONSE IN CHILDREN WITH RECURRENT RESPIRATORY INFECTIONS”, J Popl Ther Clin Pharmacol, vol. 32, no. 11, pp. 2102–2108, Sep. 2026, doi: 10.69980/rvbynt89.