2Roberto Cauda,Stephen K. Tyring,Carlo E. Grossi,Arabella B. Tilden,Kenneth D. Hatch,W. Mitchell Sams,Samuel Baron,Dr. Richard J. Whitley. Patients with condyloma acuminatum exhibit decreased interleukin-2 and interferon gamma production and depressed natural killer activity[J] 1987,Journal of Clinical Immunology(4):304~311