New caregiver to Cancer patient who is spouse. Difficult ordeal trying to get diagnosis. Every biopsy met with life-threatening complications. I fear facility mishandled things. Want spouse to get second opinion. He refuses to eat or take care of himself, convinced this last biopsy attempt "did me in". What can I do? If he won't sign form for medical release and I don't think he is thinking correctly, as POA, can I sign it?