Imposes a duty to protect upon mental health practitioners; requires reasonable efforts to modify aspects of treatment in order to reduce or eliminate the risk of harm, initiating procedures for hospitalization, notifying the intended victim or victims, or notifying law enforcement officials when a person directly communicates a threat of serious, imminent harm to self or against a readily identifiable person or persons, and the threat includes both a serious intent to act and the ability to carry out the threat; does not require a mental health practitioner to take any action which, in the exercise of reasonable professional judgment, would endanger such mental health practitioner or increase the danger to a potential victim or victims.