@article{KorkConradWeissetal., author = {Kork, F. and Conrad, Tim and Weiss, B. and Roenneberg, T. and Wernecke, K.-D. and Balzer, Felix}, title = {Associations of postoperative mortality with the time of day, week and year}, series = {Anaesthesia}, volume = {73}, journal = {Anaesthesia}, number = {6}, issn = {0959-2962}, pages = {711 -- 718}, language = {en} } @article{KorkSpiesConradetal., author = {Kork, F. and Spies, Claudia and Conrad, Tim and Weiss, B. and Roenneberg, T. and Wernecke, K.-D. and Balzer, Felix}, title = {Associations of postoperative mortality with the time of day, week and year}, series = {Anaesthesia}, journal = {Anaesthesia}, language = {en} }