Fig. 2

Pie chart presenting the students clinical semester (a) and a sunburst chart presenting the prior knowledge of the students regarding the existence and use of portable ultrasound devices (b). Pie chart presentation: students in the fifth semester (dark green), in the tenth semester (bright green), in eighth semester (bright blue) and in the ninth semester (yellow). Sunburst chart: no knowledge about the portable ultrasound devices (red), prior knowledge (bright green), previous use of portable ultrasound devices (yellow), no experience (dark blue)