necrotizing enterocolitis

hi my nephew was diagnosed with nec 2 months ago. He was born on june 23rd, and is still in the hospital. He had to under go surgury 11 times and already had 12 inc. of his intestines removed.Now he is being feed threw a feeding tube that goes directly to his intestine, unfortunitly he can not keep any of his feeds down, and has been throwing up 4 to 5 times a day. Just yesterday doctors removed his feeding tube and repoisioned it . Still he is having no sign of recovery, i was wondering if any one could please help me find a doctor that has seen cases like my nephews.                  
  P.S   Doctors are saying his intestines are moving very  very slow,