Effects of treatment versus psychotherapy on mental health of transgender people
Johns Hopkins did stop doing gender reassignment surgery and one of their psychiatrists apparently says that


  The suicide rate among transgendered people who had the surgery is 20 times higher


He also apparently says that


  transgenderism is a “mental disorder” that merits treatment, that sex change is “biologically impossible,” and that people who promote sexual reassignment surgery are collaborating with and promoting a mental disorder.


According to this website, the Johns Hopkins psychiatrist involved has a history of speaking out against transgendered people.

On the flip side, the DSM-5 (5th Edition of the Diagnostics and Statistics Manual) in 2013 added Gender Dysphoria as the new term for Gender Identity Disorder in order to try and prevent stigma; and current case reports offer no evidence that psychotherapy offers total and long-standing change of gender dysphoria.