Boeren, E.

patient study population early-onset disease pd patients late-onset onset parkinsonism rotterdam study parkinson rotterdam chromosome late-onset pd marker mutation percent netherland grip population distribution idiopathic idiopathic pd ancestor score early-onset patients pd genes 41 patients examination 41 idiopathic-pd patients tremor research pedigree number group genealogical dementia symptom parkin genetic early-onset pd relative generation late-onset patients bonifati v study population genet cause factor autosomal α- synuclein gene late-onset pd patients duijn early-onset parkinsonism feature information van swieten jc physician population-based study susceptibility gene family history 55 years family phd · p ancestor 14 generations idiopathic-pd 109 patients 0.05 mmse score 41 pd patients gasser t parkin gene community state exam age 55 years history recessive state subject individual bonifati aggregation