Some of the limitations of the study are correlated to the difficulties associated with studies conducted in high volume delivery settings. Inclusion was performed during a period of 6 months, which might prevent biases that could occur due to a longer inclusion period. Furthermore, there was a high protocol deviation in the delayed cord clamped group. As analysis was made by intention to treat, 25% of the infants reported in the delayed cord clamped group were clamped before 1 min, as the nurse-midwives perceived that early clamping against the allocation was required.