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I read with interest the article on maternal haemoglobin and birth weight in the April 2001 issue of the journal . I request a few clarifications from the authors to help me understand the study better:
Were there no still births in this cohort? The number of infants born to these 1000 women is not mentioned anywhere!
Clarification on the above is important because of the mothers of 1000 liveborn infants were interviewed and their records studied, then this becomes a retrospective case-control study.