the abbreviation is D.H.L.
The correct abbreviation is Dr.
I am unsure whether you are asking the abbreviation of doctors, doctor's or doctors' so i will say what I use for each of them.doctors = dr.sdoctor's = dr.'sdoctors' = dr.s'
Well...if you look on youtube there are some quite good links and you can watch and learn. Hope this helps :)
Doctor of Osteopathy.
Cx, or Cc