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Fewtrell, Mary S.; Kennedy, Kathy; Singhal, Atul; Martin, Richard M.; Ness, Andy; Hadders-Algra, Mijna; Koletzko, Berthold; Lucas, Alan (2008): How much loss to follow-up is acceptable in long-term randomised trials and prospective studies? In: Archives of Disease in Childhood, Vol. 93, Nr. 6: S. 458-461
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