AmitriptylineAntidepressive Agents, TricyclicNortriptylineMaprotilineDibenzazepinesPlacebo EffectDouble-Blind MethodMianserinAnalgesics, Non-NarcoticImipramineProtriptylineAntidepressive AgentsClomipramineNomifensineFluoxetinePain MeasurementCross-Over StudiesAntidepressive Agents, Second-GenerationTrimipramineDesipramineAdrenergic Uptake Inhibitors