(2) Any person voluntarily admitted to a state facility pursuant to this section may upon application and notice to the superintendent of the institution concerned, be granted a temporary leave of absence from the institution if such leave, in the opinion of the chief medical officer, will not interfere with the successful treatment or examination of the applicant. [1963 c.467 §15; 1969 c.391 §8; 1973 c.443 §4; 1973 c.827 §43; 1974 c.36 §11; 2007 c.70 §214; 2009 c.595 §433]