I know it might seem like you're being ignored, but you aren't. This is a very tough situation and (we) are as stumped as your health caregivers so far.
Let me know what city/state you're in - maybe I can find something more out about a specialist/clinic more geared to this.
I know you're anxious and probably not even sleeping much, you obviously treasure this guy and my heart goes out to you.
Hang in there - just like he is so far!
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Many have forgotten this truth, but you must not forget it.
You remain responsible, forever, for what you have tamed.