Authors: D Starodub; A Aquila; S Bajt; M Barthelmess; A Barty; C Bostedt; J D Bozek; N Coppola; R B Doak; S W Epp; B Erk; L Foucar; L Gumprecht; C Y Hampton; A Hartmann; R Hartmann; P Holl; S Kassemeyer; N Kimmel; H Laksmono; M Liang; N D Loh; L Lomb; A V Martin; K Nass; C Reich; D Rolles; B Rudek; A Rudenko; J Schulz; R L Shoeman; R G Sierra; H Soltau; J Steinbrener; F Stellato; S Stern; G Weidenspointner; M Frank; J Ullrich; L Strüder; I Schlichting; H N Chapman; J C H Spence; M J Bogan Journal: Nat Commun Date: 2012 Impact factor: 14.919