Exploring Olfactory Bulb Volume and Its Shrinkage in Aging and Neurodegeneration: A Systematic Review and Meta-Analysis of Observational Studies. - Asghar, Adil; Narayan, Ravi Kant; Kumar, Rajesh; Sarangi, Pradosh Kumar; Patra, Apurba; Kumar, Ashutosh; Zabihullah, Md (Indian Journal of Radiology & Imaging, 2026)