Development and validation of an internationally-standardized, high-resolution capillary gel-based electrophoresis PCR-ribotyping protocol for Clostridium difficile. oleh Warren N Fawley, C W Knetsch, Duncan R MacCannell, Celine Harmanus, Tim Du, Michael R Mulvey, Ashley Paulick, Lydia Anderson, E J Kuijper, Mark H Wilcox