The consent form for the California community was almost identical to the one above for the MIT community. They could not receive compensation but were informed that ``Subjects solicited from the MIT community receive $10 compensation.'' Additionally since the medical center was not available to them the following modification to the above consent form was made: ``In the unlikely event of physical injury resulting from participation in this research, I understand that no compensation can be provided for medical care. I further understand that this does not imply that such injury is the investigator's fault.''