ROSH HA'AYIN, Israel, March 30, 2015 /PRNewswire/ --Beta-O2 announced today the appointment of Dr. Yuval Avni as the company's new chief executive officer. Dr. Avni is a former partner at Giza VC, a leading early stage Israeli venture capital firm. He is also a trained physician, with clinical experience in general and vascular surgery.(Logo: http://photos.prnewswire...