[ad_1] Professor Choi, Eun Chang, Severance Hospital, otorhinolaryngologist, examines the presence of a tumor in the esophagus and respiratory tract by inserting an endoscope into the nose of a middle-aged woman. Cancer …
Read More »[ad_1] Professor Choi, Eun Chang, Severance Hospital, otorhinolaryngologist, examines the presence of a tumor in the esophagus and respiratory tract by inserting an endoscope into the nose of a middle-aged woman. Cancer …
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