{HEAD ~ The present invention} relates to the field of surgical instruments, {TAIL ~ more specifically a scalpel}, indispensable for fundamental maneuvers such as the incision and the dissection in surgical operations on a human body and on an animals body 
{ HEAD ~ The present invention } relates to the field of surgical instruments , { TAIL ~ more specifically a scalpel } , indispensable for fundamental maneuvers such as the incision and the dissection in surgical operations on a human body and on an animals body
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