Medical and Surgical @ Gastrointestinal System @ Removal @ Lower Intestinal Tract @ Via Natural or Artificial Opening @ Nonautologous Tissue Substitute
medical and surgical @ gastrointestinal system @ removal @ lower intestinal tract @ via natural or artificial opening @ nonautologous tissue substitute
Medical and Surgical @ Gastrointestinal System @ Removal @ Lower Intestinal Tract @ Via Natural or Artificial Opening @ Nonautologous Tissue Substitute
medical and surgical @ gastrointestinal system @ removal @ lower intestinal tract @ via natural or artificial opening @ nonautologous tissue substitute