The Extracorporeal Membrane Oxygenation Debate

To the Editor.— We read with interest the recent article by Dworetz et al.1 We agree with the authors' conclusions that controlled studies to assess the merits of alternative strategies for the management of critically ill neonates are necessary. The authors have carefully presented the limitations of their report including the retrospective nature of the study, the restrictive selection criteria used, and the small number of patients. However, the authors did not include the number of inborn vs outborn infants, the age of patients at the time of entry into the "study," and the specific diagnoses of the patients meeting ECMO criteria.