1. Testosterone therapy in men with Parkinson disease : results of the TEST-PD study Okun, Michael S.; Fernandez, Hubert H.; Rodriguez, Ramon L.; Romrell, Janet; Suelter, Michele; Munson, Sarah; Louis, Elan D.; Mulligan, Thomas; Foster, Paul S.; Shenal, Brian V.; Armaghani, Sheyan J.; Jacobson, Charles; Wu, Samuel; Crucian, Gregory 2006 Articles Neurosciences