title: Sympathetic nerve blocks, pragmatic trials, and responder analysis.
authors.forename: Navil F
authors.initials: NF
authors.lastname: Sethna
authors.forename: Charles B
authors.initials: CB
authors.lastname: Berde
mesh_terms: D001340:Autonomic Nerve Block; D005260:Female; D006801:Humans; D008297:Male; D012019:Reflex Sympathetic Dystrophy / Q000188:drug therapy*