title: Discordant identical twins. II. Parkinsonism.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007251:Influenza, Human / Q000150:complications; D008875:Middle Aged; D010300:Parkinson Disease / Q000209:etiology / Q000235:genetics*; D013315:Stress, Psychological / Q000150:complications