PERCUTANEOUS POLYETHYLENE TUBE TRACHEOSTOMY.
D006801:Humans; D020959:Polyethylene; D011095:Polyethylenes; D013523:Surgical Equipment; D014139:Tracheostomy; D014140:Tracheotomy
D011095:Polyethylenes; D020959:Polyethylene
POLYETHYLENES; SURGICAL EQUIPMENT; TRACHEOTOMY