Assertion: endotracheal tube's opening | /r/CreatedBy | scalpel
Facets:
Source sentences:
text: The opening may be made by a scalpel or a needle (referred to as surgical and percutaneous techniques respectively) and both techniques are widely used in current practice.
text: The opening may be made by a scalpel or a needle (referred to as surgical and percutaneous techniques respectively) and both techniques are widely used in current practice.