Efficacy of methylphenidate for the treatment of apathy in patients with Alzheimer’s disease: a systematic review and meta-analysis of randomized controlled studies - Chia-Wei Lee; Jui-Yi Chen; Ching-Chung Ko; Min-Hsiang Chuang; Wen-Wen Tsai; Cheuk-Kwan Sun; Kuo-Chuan Hung (Psychopharmacology, 2022)