Objective To investigate the relationship betw een polymorphisms in Parkin gene and the risk of Parkinson's disease(PD) in Han nationality of Shandong province.Methods The alleles of three polymorphisms(Ser167 Asn,Val380Leu and Arg366Trp) in Parkin gene in 145 PD patients(PD group) and 126 people who undertook health examination(control group) in Han population of Shandong Province were analyzed by DNA sequencing and restricted endonuclease digestion.PD group included 67 patients with early-onset Parkinson'...