Reflux gazeux

Reflux gazeux Source google image: https://www.revmed.ch/var/site/storage/images/rms-169/images/rms_idpas_d_isbn_pu2008-31s_sa06_art06_img002.jpg/647155-1-fre-CH/RMS_idPAS_D_ISBN_pu2008-31s_sa06_art06_img002.jpg_i770.jpg