Seroepidemiologic StudiesAntibodies, ViralAntibodies, BacterialSparganosisEnzyme-Linked Immunosorbent AssayCoronary VesselsChlamydophila pneumoniaeCoronary AngiographyCoronary Artery DiseaseCoronary CirculationAngioplasty, Balloon, CoronaryPrevalenceCoronary StenosisImmunoglobulin GCoronary Artery BypassCoronary DiseaseCoronary VasospasmCoronary AneurysmCoronary ThrombosisMyocardial Infarction