Safarpour, M., A. Fotouhi, S. R. Hosseini, M. Mohamadzade, and A. Bijani. “Predictors of Orthostatic Hypotension in the Elderly: Results from the Amirkola Health and Ageing Project (AHAP) Study”. The Journal of Tehran University Heart Center, Vol. 14, no. 4, Oct. 2019, pp. 165-70, doi:10.18502/jthc.v14i4.2000.