 VolitionRx NYSE-A:VNRX Limited has announced the appointment of Sharon Ballesteros as the companys new US head of quality and development process. VolitionRx NYSE-A:VNRX said Ballesteros has more than 20 years of experience within the in-vitro diagnostics industry with senior program management, quality assurance, and process improvement roles at companies such as Siemens Health Diagnostics, Thermo Fisher, and Agena Bioscience. 