Adaptation, Psychological, Adult, Aged, Anxiety, Case-Control Studies, Catheterization, Chest Pain, Colonic Diseases, Functional, Coronary Disease, Depression, Esophagus, Female, Gastroesophageal Reflux, Humans, Interview, Psychological, Male, Middle Aged, Pain, Pain Measurement, Prospective Studies, Psychophysiologic Disorders, Self-Assessment, Sensation, Sensory Thresholds, Social Support