Beautyrest Pressure Smart The advantage of clinical trials is that they offer new therapies that may be more effective than existing therapies or have fewer side effects.The disadvantage is that the therapy has not been proven to work or not work for everyone.Many people with cancer are eligible to participate in clinical trials.To find out more, ask your health care professional.There are many "holistic" treatments and other treatments for brain tumors that are quoted on internet sites, health magazines, and other publications. http://www.hirezmediahawaii.com/