Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Karin Stephen:

"

Stephen entered private practice as a psychoanalyst. She gave the first lecture course on psychoanalysis ever given at Cambridge University: the course of six lectures was repeated over several years, and formed the basis of her medical textbook Psychoanalysis and medicine.[4] She developed deafness and had manic depression.[citation needed] After her husband died in 1948, her health deteriorated and she died by suicide in 1953.[3]