Homocysteine and coronary heart disease: meta-analysis of MTHFR case-control studies, avoiding publication bias. oleh Robert Clarke, Derrick A Bennett, Sarah Parish, Petra Verhoef, Mariska Dötsch-Klerk, Mark Lathrop, Peng Xu, Børge G Nordestgaard, Hilma Holm, Jemma C Hopewell, Danish Saleheen, Toshihiro Tanaka, Sonia S Anand, John C Chambers, Marcus E Kleber, Willem H Ouwehand, Yoshiji Yamada, Clara Elbers, Bas Peters, Alexandre F R Stewart, Muredach M Reilly, Barbara Thorand, Salim Yusuf, James C Engert, Themistocles L Assimes, Jaspal Kooner, John Danesh, Hugh Watkins, Nilesh J Samani, Rory Collins, Richard Peto, MTHFR Studies Collaborative Group