Dr Google

https://inews.co.uk/essentials/news/uk/doctors-gps-dr-google-patient-list/

formal evaluation:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2815378/
in people referred to hospital, other studies found using the web to prepare increased anxiety levels
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5487739/ but overall mixed result

German study published in 2017 examined ways that people use internet for web info

https://link.springer.com/article/10.1007%2Fs00103-017-2549-2

some early US data saying that potential for some symptoms of obsessional compulsive disorder driven by internet searches
http://www.psy-journal.com/article/S0165-1781(15)30387-5/fulltext

http://www.jad-journal.com/article/S0165-0327(14)00733-2/fulltext

Cyberchondria: Studies of the Escalation of Medical Concerns in Web Search

other articles of note

http://www.i-jmr.org/2014/1/e7/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4590007/

IBM pitched its Watson supercomputer as a revolution in cancer care. It’s nowhere close

Sexuality coding

NHS England document 

comparison with recording ethnic group

http://bjgp.org/content/61/586/e290

https://hijournal.bcs.org/index.php/jhi/article/view/63/103