Shirato, H. et al. 1993. Squamous Cell Carcinoma Antigen in Serum for Monitoring of Head and Neck and Uterine Cervical Squamous Cell Carcinomas After Radiotherapy. Acta Oncologica. 32, 6 (Jan. 1993), 663–666. DOI:https://doi.org/10.3109/02841869309092449.