You can't really: First, it depends what kind of illness you got. Unless you are willing to subject yourself to another meal at the restaurant, hard to tell what what the cause. If you think it was an allergic reaction, you can have a blood test to see if you have any food allergies.
Answered 8/10/2012
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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