Placebo EffectNocebo EffectAnticipation, PsychologicalPain PerceptionProglumideDouble-Blind MethodPsychophysiologic DisordersDrug-Related Side Effects and Adverse ReactionsPain ThresholdPainInformed ConsentHyperalgesiaPlacebosConditioning (Psychology)Pain MeasurementCross-Over StudiesTreatment OutcomeAdministration, OralDrug Therapy, CombinationRandomized Controlled Trials as TopicClinical Trials as TopicDose-Response Relationship, DrugDrug Administration ScheduleSingle-Blind MethodTime FactorsAdministration, InhalationRandom AllocationBronchodilator AgentsAnti-Inflammatory Agents, Non-SteroidalBlood PressureFollow-Up Studies