This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following technique of Local
anesthesia requires extra oral landmarks? 
Select and explain. 
A. High tuberosity approach, B. Fischer 123, C. Gowgates, D. Vazirani-Akinosi
C: Gowgates
Answer: C: Gowgates 
Explanation: None