The personal data administrator is Maria Sklodowska-Curie institute – Oncology Center Gliwice Branch, ul. Wybrzeże Armii Krajowej 15, 44-101 Gliwice, Poland. The acquired data will be used only for registration and organizational purposes related to the CEEPC 13 scientific conference, including presentation of participants' names, affiliations and e-mail adresses in conference materials. Providing the required data is the same as consent for the processing and archiving of the above-mentioned data.