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  Indian J Med Microbiol
 

Figure 3: Midline sagittal spinous process view, when the transducer is positioned directly over the midline. Note: The occiput (arrowhead), spinous process of C1(rudimentary)-C2-C3-C4 (arrows) can be easily identified. The images were obtained by means of a Sonoscape P50 Ultrasound (Sonoscape Europe s.r.l., Rome, Italy). The O2-O3 mixture was produced by means of a Multiossigen Medical 99IR generator (Multiossigen S.p.A., Gorle, Bergamo, Italy).

Figure 3: Midline sagittal spinous process view, when the transducer is positioned directly over the midline. 
Note: The occiput (arrowhead), spinous process of C1(rudimentary)-C2-C3-C4 (arrows) can be easily identified. The images were obtained by means of a Sonoscape P50 Ultrasound (Sonoscape Europe s.r.l., Rome, Italy). The O<sub>2</sub>-O<sub>3</sub> mixture was produced by means of a Multiossigen Medical 99IR generator (Multiossigen S.p.A., Gorle, Bergamo, Italy).