I. M. Bergbrant, L. Samuelsson, S. Olofsson, F. Jonassen, and A. Ricksten, “Polymerase chain reaction for monitoring human papillomavirus contamination of medical personnel during treatment of genital warts with CO2 laser and electrocoagulation”., Acta Derm Venereol, vol. 74, no. 5, pp. 393–395, Sep. 1994.