Hands-on time during cardiopulmonary resuscitation is affected by the process of teambuilding: a prospective randomised simulator-based trial. - Hunziker, Sabina; Tschan, Franziska; Semmer, Norbert K.; Zobrist, Roger; Spychiger, Martin; Breuer, Marc; Hunziker, Patrick R.; Marsch, Stephan C. (BMC Emergency Medicine, 2009)