1. Seasonality of hypoplastic left heart syndrome in the United States: A 10-year time– series analysis 
Pirooz Eghtesady, MD, PhD, Anoop Brar, PhD, Matthew Hall, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 141, Issue 2, Pages (February 2011)
DOI: /j.jtcvs
Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1
Seasonal trends in birth months (1996–2006). Model-based monthly estimates for the rates per 100,000 births for HLHS, CoA, congenital AS and IAA. The data show a seasonal trend in the occurrence of HLHS and CoA, but not in congenital AS or IAA. HLHS, Hypoplastic left heart syndrome; CoA, coarctation of the aorta; AS, aortic stenosis; IAA, interrupted aortic arch.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions