Socioeconomic inequalities in physical, psychological, and cognitive multimorbidity in middle-aged and older adults in 33 countries: a cross-sectional study
Authors: Yujie Ni, Yaguan Zhou, Mika Kivimäki, Ying Cai, Rodrigo M Carrillo-Larco, Xin Xu, Xiaochen Dai, Xiaolin Xu