Open label extension studies and the ethical design of clinical trials.
Casarett
D
D
Philadelphia Veterans Affairs Medical Center, USA.
Karlawish
J
J
Sankar
P
P
Hirschman
K B
KB
Asch
D A
DA
D000328:Adult; D000368:Aged; D000700:Analgesics / Q000627:therapeutic use*; D001294:Attitude to Health; D002986:Clinical Trials as Topic; D015507:Drugs, Investigational; D028744:Ethics Committees, Research; D005069:Evaluation Studies as Topic; D006801:Humans; D009042:Motivation; D010146:Pain / Q000188:drug therapy; D012107:Research Design; D035842:Research Subjects; D018570:Risk Assessment
D000700:Analgesics; D015507:Drugs, Investigational