By Bots M.L.   Evans G.W.   Riley W.   Meijer R.   McBride K.H.   Paskett E.D.   Helmond F.A.   Grobbee D.E.   for the OPAL Investigators   in Controlled Clinical Trials

ISSN:0197-2456|24|6|752-775

Elsevier‎(2003)‎

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