Editor—I read the interesting article by Yigitet al about the lipid peroxidation in the first 10 days of life.1 A few points need explanation. Table 1 showed the range for collecting control group samples as 2–10 days, which contradicts the statement of the authors that samples were drawn on the day of admission.

Secondly, the mode of delivery was not mentioned. Rogerset al have reported higher levels of malondialdehyde (MDA) in cord blood after labour as compared with caesarean section,2 so the higher levels …