EDITOR—It is unfortunate that the scientific basis of Savulescu's commentary on the ethics of the study by Parkins et al, in which infants were exposed to 15% oxygen, is so weak.1 Savulescu states that evidence exists that exposure to hypoxia is related to sudden infant death; he refers to a study in piglets to support his assertion.2 In fact, this study he cites shows no such thing. Parkins et al cogently explain the scarcity of evidence on the effects of exposure to 15% …