Ultrasound International Open, 1(2), E67-71. Georg Thieme Verlag Ultrasound International Open, 1(2), E67-E71. Georg Thieme Verlag Ultrasound International Open, Vol 01, Iss 02, Pp E67-E71 (2015) Ultrasound international open, 1(2), E67-E71. Georg Thieme Verlag