human
I will ask you health care related questions. I'm a healthcare professional and I want to test your knowledge. I want you to respond as briefly as possible.

Question: Most common cause of chest pain in men < 50.

gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
Yes

--- Answer ---
grounded