Department of Neurosurgery,
Ain Shams University, Cairo Gamma Knife Center,
Nasser Institute,
Head of the Radiotherapy Department,
University Hospital "St. Marina",
Medical University Varna,
Head of the Radiotherapy Department,
Somogy County Kaposi Mór Teaching Hospital,
Chairman of the Department of Neurosurgery,
Chief of the Gamma Knife Radiosurgery Center,
Koç University School of Medicine,
Department of Neurosurgery,
The University of Texas MD Anderson Cancer Center,
Head of the Radiosurgery Department,
Medical Institute named after Dr. Berezin Sergey (MIBS),
Radiation Oncologist,
Radiosurgery Center “Sigulda”,
Department of Neurosurgery,
Tokyo Women’s Medical University Adachi Medical Center,
Chief of Radiosurgery,
Department of Radiation Oncology,
Miami Cancer Institute,
Department of Neurosurgery,
Tianjin Medical University General Hospital,
Director of the Center for Advanced Image-Guided Radiotherapy,
Shin-Yurigaoka General Hospital,
Consultant Neurosurgeon,
ADK Hospital,
Director,
Zapp Radiosurgery System,
Medical Director &
Head of Radiation Oncology Department,
Apollo Proton Centre,
Head of Radiation Oncology Department,
Amrita Institute of Medical Sciences,