The caliber of the needles used for injection or aspiration in surgical work.
Urrets-Zavalía
A
A
D006801:Humans; D007267:Injections; D009339:Needles / Q000592:standards*; D009885:Ophthalmology; D013396:Suction; D013514:Surgical Procedures, Operative; D014894:Weights and Measures / Q000592:standards*