Trenkwalder, P., Ruland, D., Stender, M., Gebhard, J., Trenkwalder, C., Lydtin, H., et al. (1994). Prevalence. awareness, treatment and control of hypertension in a population over the age of 65: Results from the Starnberg Study on Epidemiology of Parkinsonism and Hypertension in the elderly (STEPHY). Journal of Hypertension, 12, 709-716.