This thread inspired me to do a search on members with "pharmacist" in their userid's, and there are some interesting new ones.
Most likely you have missed your son 
sonofapharmacist or you want to hide your son 
Lol. But this account inactive, Last Active: April 27, 2014I think you can set a neutral feedback on their profiles warning others members of the forum about the not-ownership of those accounts.
It will more better if leave neutral feedback by any DT member.