Medical and Surgical @ Gastrointestinal System @ Occlusion @ Esophagus, Middle @ Via Natural or Artificial Opening Endoscopic @ No Device
medical and surgical @ gastrointestinal system @ occlusion @ esophagus, middle @ via natural or artificial opening endoscopic @ no device
Medical and Surgical @ Gastrointestinal System @ Occlusion @ Esophagus, Middle @ Via Natural or Artificial Opening Endoscopic @ No Device
medical and surgical @ gastrointestinal system @ occlusion @ esophagus, middle @ via natural or artificial opening endoscopic @ no device