Research hotspots and trend analysis of cognitive frailty in patients with chronic diseases at home and abroad. - LIN, Zhen-peng; WU, Yu-long; LI, Shu-feng; LI, An-qi; KONG, Fan-qun; XUE, Yu-chen; DU, Jian-jun; LI, Dan; CHENG, Mei (Modern Preventive Medicine, 2026)