Pandemic H1N1 influenza virus caused mortality in patients with ARDS or HLH; an unexpected finding for pandemic H1N1 (2009) influenza virus. Thus, for children with leukemia and infected with H1N1 virus, short- and long-term complications should be kept in mind during evaluation.

The HFE polymorphisms had no effect on cardiac iron overload. However, pulmonary vein atrial reversal flow velocity measurements can provide important information for detecting diastolic dysfunction during cardiac follow-up of patients with HFE polymorphisms. Studies with more patients are needed to provide more information regarding this matter.

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