Here are some sources on ozone used in medicine.

1. Historical Development Of Oxygen/Ozone Therapy:
    Pioneers In Ozone Therapy, Renate Viebahn,
    Karl Haug Publ., Heidelberg, 1994.

2. Oxygen-Ozone Therapy: A Critical Evaluation,
     Velio Ricci, Kluwer, Boston, 2002.

3. Use Of Ozone In Medicine,
    Siegfried Rilling, Medicina Biologica, Portland, 1987.

Best regards,

Matthew