The doctors themselves don’t ask questions. You fill out page after page of these questions yourself.
I wonder what a N/A answer would get you? Or just lie.
A while ago, I've read a thought provoking article about operation whose name I can not recall, mindblow or similar. It goes something like this. In case of civil unrest, U.S. government deliberately "leaks" huge amount of personal data of U.S. and non-U.S. citizens gathered through data mining, similar to wikileaks. In a split second, everything about you and everybody else is in public domain, indexed and searchable by whomever is interested. As a result, partnerships fail, divorces get tidal proportions, friendships sour, businesses go bankrupt and distrust becomes universal. Society as we know it is dead. Everybody is either smeared (deliberate errors in data mining) or publicly embarrassed.
This snooping could easily be part of such project.
How to handle it? Don't lie and don't tell the truth. Be creative.
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5 to 10 plus 20 years community service.