EUVAS (Vasculitis) – http://www.vasculitis.org
Global kidney academy – http://www.gkaonlineacademy.com
NDT-Educational – http://www.ndt-educational.org
ISN education – http://www.theisn.org/education-by-topic
CVK with US – http://www.nejm.org/doi/full/10.1056/NEJMvcm0810156
Cystatin C and age – GFA Lund formula (download)