The following electronic only articles are published in conjunction with this issue of Heart.

Williams syndrome associated with complete atrioventricular septal defect

S.Nakamoto, T Saga, T Shinohara

Williams syndrome is a genetic disorder associated with characteristic facies, supravalvar aortic stenosis, peripheral pulmonary stenosis, mental retardation, hypertension, premature aging of skin, and congenital cardiac defects. Many cardiac defects such as bicuspid aortic valve, mitral valve regurgitation, coarctation of the aorta, and ventricular or atrial septal defects are …