title: Preferred reporting items for systematic reviews and meta-analyses: the PRISMA Statement.
authors: David
authors: D
authors: Moher
authors: Alessandro
authors: A
authors: Liberati
authors: Jennifer
authors: J
authors: Tetzlaff
authors: Douglas G
authors: DG
authors: Altman
references: CMAJ. 2004 Sep 28;171(7):735-40
references: 15451835
references: Ann Intern Med. 2001 Nov 6;135(9):769-81
references: 11694102
references: CMAJ. 2004 Sep 14;171(6):606-7
references: 15367465
references: Mt Sinai J Med. 1996 May-Sep;63(3-4):216-24
references: 8692168
references: Ann Intern Med. 2007 Oct 16;147(8):W163-94
references: 17938389
references: BMJ. 2003 Nov 8;327(7423):1083-4
references: 14604930
references: Ann Emerg Med. 2001 Nov;38(5):518-26
references: 11679863
references: Lancet. 2004 Apr 24;363(9418):1341-5
references: 15110490
references: Ann Intern Med. 2001 Apr 17;134(8):663-94
references: 11304107
references: Anesth Analg. 2001 Mar;92(3):700-9
references: 11226105
references: J Clin Epidemiol. 2008 Jun;61(6):521-4
references: 18471654
references: Ann Intern Med. 2003 Jan 7;138(1):W1-12
references: 12513067
references: JAMA. 2004 May 26;291(20):2457-65
references: 15161896
references: Crit Care. 2005 Oct 5;9(5):R575-82
references: 16277721
references: Lancet. 2005 Jul 9-15;366(9480):107-8
references: 16005318
references: Ann Intern Med. 1987 Mar;106(3):485-8
references: 3813259
references: Evid Based Dent. 2004;5(1):17
references: 15238972
references: PLoS Med. 2007 Mar 27;4(3):e78
references: 17388659
references: BMJ. 2005 May 7;330(7499):1053
references: 15817526
references: PLoS Med. 2009 Jul 21;6(7):e1000100
references: 19621070
references: BMJ. 2001 Jul 28;323(7306):224-8
references: 11473921
references: JAMA. 1994 Nov 2;272(17):1367-71
references: 7933399
references: Lancet. 2006 Mar 18;367(9514):881-3
references: 16546523
references: BMJ. 2001 Jul 21;323(7305):157-62
references: 11463691
references: BMJ. 2008 Apr 26;336(7650):924-6
references: 18436948
references: Lancet. 1999 Nov 27;354(9193):1896-900
references: 10584742
references: Nat Genet. 2001 Nov;29(3):306-9
references: 11600885
references: N Engl J Med. 1987 Feb 19;316(8):450-5
references: 3807986
references: JAMA. 2002 Jun 5;287(21):2831-4
references: 12038926
references: Arch Intern Med. 2006 Jan 23;166(2):161-6
references: 16432083
references: BMJ. 2006 Sep 16;333(7568):597-600
references: 16974018
references: Stat Med. 1995 Oct 15;14(19):2057-79
references: 8552887
references: J Bone Joint Surg Am. 2001 Jan;83(1):15-24
references: 11205853
references: BMJ. 2006 Jan 28;332(7535):202-9
references: 16415336
references: Am J Respir Crit Care Med. 2006 Sep 1;174(5):605-14
references: 16931644
references: J Health Serv Res Policy. 2005 Jul;10 Suppl 1:35-48
references: 16053582