Once you are admitted how do you get out?
If you decide to leave and they have you held their under the mental health act....you will be detained
You can be dissapeared into the system
Ezra Pound was locked up. He had to get Eustace Mullins to investigate the federal reserve for him
The book catch 22 is all about how the authorities trap people using psychiatry:
There was only one catch and that was Catch-22, which specified that a  concern for one's safety in the face of dangers that were real and  immediate was the process of a rational mind. 
Orr  was crazy and could be grounded. All he had to do was ask; and as soon  as he did, he would no longer be crazy and would have to fly more  missions. Orr would be crazy to fly more missions and sane if he didn't,  but if he were sane he had to fly them. If he flew them he was crazy  and didn't have to; but if he didn't want to he was sane and had to.  Yossarian was moved very deeply by the absolute simplicity of this  clause of Catch-22 and let out a respectful whistle. (p. 56, ch. 5)
Don't think that canada is squeaky clean by the way...it's government is totally corrupt and it has a history of illegal human experimentation
https://en.wikipedia.org/wiki/Mkultra
The experiments were exported to Canada when the CIA recruited Scottish psychiatrist 
Donald Ewen Cameron, creator of the "
psychic driving"  concept, which the CIA found particularly interesting. Cameron had been  hoping to correct schizophrenia by erasing existing memories and  reprogramming the psyche. He commuted from 
Albany, New York, to 
Montreal every week to work at the 
Allan Memorial Institute of 
McGill University  and was paid $69,000 from 1957 to 1964 to carry out MKUltra experiments  there. These research funds were sent to Dr. Cameron by a CIA front  organization, the Society for the Investigation of Human Ecology, and as  shown in internal CIA documents, Dr. Cameron did not know that the  money originated from the CIA.[SUP]
[42][/SUP] In addition to LSD, Cameron also experimented with various paralytic drugs as well as 
electroconvulsive therapy  at thirty to forty times the normal power. His "driving" experiments  consisted of putting subjects into drug-induced coma for weeks at a time  (up to three months in one case) while playing 
tape loops  of noise or simple repetitive statements. His experiments were  typically carried out on patients who had entered the institute for  minor problems such as anxiety disorders and postpartum depression, many  of whom suffered permanently from his actions.[SUP]
[43][/SUP] His treatments resulted in victims' 
incontinence, 
amnesia, forgetting how to talk, forgetting their parents, and thinking their interrogators were their parents.[SUP]
[44][/SUP] His work was inspired and paralleled by the British psychiatrist 
William Sargant at 
St Thomas' Hospital,  London, and Belmont Hospital, Surrey, who was also involved in the  Intelligence Services and who experimented extensively on his patients  without their consent, causing similar long-term damage.[SUP]
[45][/SUP]
 It was during this era that Cameron became known worldwide as the first chairman of the 
World Psychiatric Association as well as president of the 
American and Canadian psychiatric associations. Cameron had also been a member of the 
Nuremberg medical tribunal in 1946–47.[SUP]
[46][/SUP]
 
Naomi Klein argues in her book 
The Shock Doctrine  that Cameron's research and his contribution to the MKUltra project was  actually not about mind control and brainwashing, but about designing  "a scientifically based system for extracting information from  'resistant sources.' In other words, torture." Citing 
Alfred W. McCoy, Klein further writes that "Stripped of its bizarre excesses, Dr. Cameron's experiments, building upon 
Donald O. Hebb's earlier breakthrough, laid the scientific foundation for the CIA's two-stage psychological torture method