British Medical Ultrasound Society (BMUS)
Schweizerische Gesellschaft für Ultraschall in der Medizin (SGUM)
Sonoweb.de
Australasian Society for Ultrasound in Medicine (ASUM)
European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB)
www.ecomovies.it
www.ultrasoundschoolsinfo.com