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Discover 12,991 clinical trials near San Francisco, California. Find research studies in your area.
Showing 11021-11040 of 12,991 trials
NCT01076452
The goal of the second phase of the study is to determine if simultaneous bilateral subthalamic nucleus stimulation or simultaneous bilateral globus pallidus stimulation is more effective in reducing symptoms of Parkinson's Disease.
NCT01511458
The purpose of this blinded, multi-center, prospective, case-controlled study is to compare the Ariosa Harmony™ Prenatal Test for trisomy 21 detection with a standard first-trimester prenatal screening test consisting of serum screening (PAPP-A,free beta-hCG \[β-hCG\] or total hCG) and a nuchal translucency (NT) measurement (i.e. combined first trimester screening) in a general screened population. The performance characteristics of these two test modalities will be assessed relative to the clinical reference standard of genetic analysis of the fetus or phenotypic characterization and genetic analysis of the newborn.