Explanatory notes
… majority of cases, are used only in professional practice (e.g., by doctors, surgeons, dentists, veterinary surgeons, … or surgery (human or veterinary) are, in effect, tools (e.g., hammers, mallets, saws, chisels, gouges, forceps, … metal, glass and metal, plastics, etc.), of all kinds, e.g., injection, puncture, anaesthesia, irrigation, wound …