Ubeda, J V Null hypothesis of husband-wife concordance of Parkinson's disease in 1,000 married couples over age 50 in Spain. [electronic resource] - Neuroepidemiology 1998 - 90-5 p. digital Publication Type: Journal Article ISSN: 0251-5350 Standard No.: 10.1159/000026158 doi Subjects--Topical Terms: AgedFemaleHumansIncidenceMaleMiddle AgedParkinson Disease--epidemiologyRisk FactorsSpain--epidemiologySpouses