Do lawyers get better medical and dental treatment?

In my new book Discover Your Inner Economist: Use Incentives to Fall in Love, Survive Your Next Meeting, and Motivate Your Dentist, I discuss the claim that lawyers get better treatment from their doctors and dentists, at least compared to the average person. Fear of litigation is one possible mechanism, but not the only one. Addendum: Just to be clear, let's adjust for income, which is likely to be above average.

I would love to know what you all think; comments, of course, are open.