CRP and pericarditis: We included the presence of abdominal manifestations, sex, age at onset (months, median±SD), age younger than 6 months, IVIG-responsiveness, late treatment, non-coronary artery involvement (aortic and mitral regurgitation, ventricular dysfunction and pericarditis), WBC, PLT, albumin, sodium and CRP from the acute phase in multivariate analysis.