Gul A, Yousaf J. HYPOVITAMINOSIS D, CORTICAL AND SUB-CORTICAL COGNITIVE FUNCTIONING DEFICTS IN PATIENTS WITH PARKINSON’S DISEASE DEMENTIA. Pak Armed Forces Med J [Internet]. 2018 Dec. 31 [cited 2024 Nov. 25];68(6):1605-08. Available from: https://pafmj.org/PAFMJ/article/view/2556