title: Patient recruitment for clinical research.
authors: D H
authors: DH
authors: Wong
mesh_terms: D000772:Anesthesia, Local; D002387:Cataract Extraction; D002986:Clinical Trials as Topic; D004832:Epilepsy, Absence; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block; D010361:Patients; D012107:Research Design