Authors: HELWEG G FRAUSCHER F SPRINZL GM GOTWALD T VOLKLEIN C KNAPP RJ SOGNER PFW MAURER H FREDE TE ZURNEDDEN D

Citation: G. Helweg et al., ANATOMY OF THE EUSTACHIAN-TUBE AS DEMONSTRATED BY ENDOLUMINAL ULTRASONOGRAPHY, Journal of ultrasound in medicine, 15(10), 1996, pp. 673-678