'A number of working parties constituted by WHO and IARC [International Agency for Research on Cancer] contributed to the preparation of ICD-O' - Pref...
'A number of working parties constituted by WHO and IARC [International Agency for Research on Cancer] contributed to the preparation of ICD-O' - Preface.
'... ICD-O represents an extension of Chaper II (Neoplasms) of the Ninth Revision of the "International Classification of Diseases" (ICD-9) ' - Preface.