%0 Journal Article %A Mario L. de Lemos %T NNT for studies with long-term follow-up %D 2005 %R 10.1503/cmaj.1041426 %J Canadian Medical Association Journal %P 613-613 %V 172 %N 5 %U https://www.cmaj.ca/content/cmaj/172/5/613.1.full.pdf