Raspa M, Sacco P, Candrilli SD, Bishop E, Petrillo J. Validity of a condition specific outcome measure for fragile X syndrome: the Aberrant Behaviour Checklist-utility index. J Intellect Disabil Res. 2016 Sep;60(9):844-55. doi: 10.1111/jir.12264
Poulos C, Riewpaiboon A, Stewart JF, Clemens J, Guh S, Agtini M, Anh DD, Baiqing D, Bhutta Z, Sur D, Whittington D. Cost of illness due to typhoid fever in five Asian countries. Trop Med Int Health. 2011 Mar 1;16(3):314-23.
McKenna SP, Whalley D, Doward LC. Which outcomes are important in schizophrenia? Int J Methods Psychiatr Res. 2000;9(1):S58-67.