O'Malley M S, Shaheen N J, Crosby M A, Murray S C, Klenzak J S, Galanko J A, Singla A, Ransohoff D F, Sandler R S, Gaither J, Paskett E D
UNC Lineberger Comprehensive Cancer Center, CB#7295, Chapel Hill, NC 27599-7295, USA.
N C Med J. 2001 Sep-Oct;62(5):292-7.