title: Parkinson disease, the effect of levodopa, and the ELLDOPA trial. Earlier vs Later L-DOPA.
mesh_terms: D000978:Antiparkinson Agents / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D019317:Evidence-Based Medicine; D006801:Humans; D007980:Levodopa / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use*; D009462:Neurology / Q000639:trends; D017063:Outcome Assessment, Health Care; D010300:Parkinson Disease / Q000188:drug therapy*; D010818:Practice Patterns, Physicians'