Yu, S.-. yang ., Lian, T.-. hong ., Guo, P., Li, L.-. xia ., Ding, D.-. yu ., Li, D.-. ning ., Liu, L., Zhao, H., Hu, Y., Zuo, L.-. jun ., Gao, J.-. hua ., Yu, Q.-. jin ., Jin, Z., Wang, R.-. dan ., Zhu, R.-. yan ., Wang, X.-. min ., Zhang, W., 2020. Correlations of apathy with clinical symptoms of Alzheimer's disease and olfactory dysfunctions: a cross-sectional study 20.. https://doi.org/10.1186/s12883-020-01978-9