aDepartment of Medicine, University of Washington School of Medicine, USA bDepartment of Medicine, University of Washington School of Medicine, Puget Sound Blood Center, Seattle, Washington, USA Correspondence to Professor Thomas H. Price, MD, Medicine/Hematology, Department of Medicine, University of Washington School of Medicine, Box 359190, Puget Sound Blood Center, 921 Terry Avenue, Seattle, WA 98104, USA Tel: +1 206 292 6571/206 292 6572; e-mail: [email protected]
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Dale et al. (2008) studied this question.
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