Association of ACTN3 R577X but not ACE I/D gene variants with elite rugby union player status and playing position

Shane M Heffernan, Liam P Kilduff, Robert M Erskine, Stephen H Day, Jamie S Mcphee, Gerard Eugene McMahon, Georgina Kate Stebbings, Joshua P H Neale, Sarah J Lockey, William J Ribbans, Christian J Cook, Beth Vance, Stuart M Raleigh, Craig Roberts, Mark A Bennett, Guan Wang, Malcolm Collins, Yannis P Pitsiadis, Alun G Williams