Dopamine deficiency: Symptoms, causes, and treatment Medical News Today, 17 Jan 2018 Aboul Ezz, H. S., Khadrawy, Y. A., Ahmed, N. A., Radwan, N. M.,
Brain Iron Metabolism Dysfunction in Parkinson's Disease. Alzforum, 08 Apr 2016 . Brain Iron Metabolism Dysfunction in Parkinson's Disease. Mol Neurobiol. 2016 Apr 2; PubMed.