Peyman H, Esterberg E, Obermuller D, Bartsch R. Bone evaluation study-2: update on the epidemiology of osteoporosis in Germany. Dtsch Arztebl Int. 2024 Apr 9;19(1):26. doi: 10.1007/s11657-024-01380-9
Liu X, Hannum E. Early poverty exposure predicts young adult educational outcomes in China. China Econ Rev. 2017 Jul;44:79-97.