Association of Alzheimer’s disease and periodontitis - a systematic review and meta-analysis of evidence from observational studies - Kaliamoorthy, Sriram; Nagarajan, Mahendirakumar; Sethuraman, Vijayparthiban; Jayavel, Kavitha; Lakshmanan, Vijayalakshmi; Palla, Santosh (Medicine and Pharmacy Reports, 2022)