The premature infants in need of transfusion (pint) study: A randomized, controlled trial of a restrictive (LOW) versus liberal (HIGH) transfusion threshold for extremely low birth weight infants

From Pediatrics and Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada; Department of Pediatrics, Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada; Mercy Hospital for Women, Melbourne, Victoria, Australia; Sunnybrook and Women’s Health Science Center, University of Toronto, Toronto, Ontario, Canada; Canadian Blood Services and Transfusion Medicine, McMaster University, Hamilton, Ontario, Canada; Royal Alexandra Hospital, Edmonton, Alberta, Canada; Albany Medical Center, Albany, New York; Brooklyn Hospital Center, Brooklyn, New York; Kingston General Hospital, Kingston, Ontario, Canada; McGill University, Montreal, Quebec, Canada; and Clinical Trials Methodology Group, Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada

Received 18 November 2005; received in revised form 23 February 2006; accepted 8 May 2006.

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