500 West Monroe Street, c/o Nancy Rohrback, Chicago, IL, 60661, 
101 Constitution Avenue, NW, Suite 900, Washington, DC, 20001, 
975 F St NW, Suite 550, Washington, DC, 20004, 
3) BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
5) CAMBIA HEALTH SOLUTIONS (FORMERLY KNOWN AS THE REGENCE GROUP)
6) CAREFIRST BLUECROSS BLUESHIELD
7) CHAPTER
8) CHILDREN'S HOSPITAL ASSOCIATION F/K/A NAT'L ASSOCIATION OF CHILDREN'S HOSPITALS
9) DAVITA INC.
10) FOUNTAIN HOUSE
11) GE HEALTHCARE
975 F St NW, Suite 550, Washington, DC, 20004, 
1) AMERICAN HOSPITAL ASSOCIATION
4) BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
6) CAMBIA HEALTH SOLUTIONS (FORMERLY KNOWN AS THE REGENCE GROUP)
7) CAREFIRST BLUECROSS BLUESHIELD
8) CHAPTER
9) CHILDREN'S HOSPITAL ASSOCIATION F/K/A NAT'L ASSOCIATION OF CHILDREN'S HOSPITALS
10) DAVITA INC.
11) FOUNTAIN HOUSE
202-258-9381
975 F St NW, Suite 550, Washington, DC, 20004, 
500 West Monroe Street, c/o Nancy Rohrback, Chicago, IL, 60661, 
975 F St NW, Suite 550, Washington, DC, 20004, 
202-297-3396
500 West Monroe Street, c/o Nancy Rohrback, Chicago, IL, 60661, 
975 F St NW, Suite 550, Washington, DC, 20004, 
3) BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
5) CAMBIA HEALTH SOLUTIONS (FORMERLY KNOWN AS THE REGENCE GROUP)
6) CAREFIRST BLUECROSS BLUESHIELD
7) CHAPTER
8) CHILDREN'S HOSPITAL ASSOCIATION F/K/A NAT'L ASSOCIATION OF CHILDREN'S HOSPITALS
9) DAVITA INC.
10) FOUNTAIN HOUSE
11) GE HEALTHCARE