| http://www.w3.org/ns/prov#value | - idence with cases identified solely from death certificates.2, 3 Moreover, two of the three studies included only men,2, 3 while the results of the one study including women suggested a gender difference.1 Although the results of previous studies seem qualitatively similar???suggesting slightly lower PD risk among men with high activity levels???additional data from studies that are methodological
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