Sakellariou Theodoros is a Cardiologist with private practices in Ampelokipoi and Voula. He is a PhD candidate at the National and Kapodistrian University of Athens and a graduate of the Medical School of Aristotle University of Thessaloniki. The doctor has extensive experience in the diagnosis and management of all cardiovascular diseases, including arterial hypertension, dyslipidemia, arrhythmias, tachycardias, atrial fibrillation, coronary artery disease, and heart failure. He provides specialized examinations such as electrocardiogram, real-time cardiac rhythm monitoring, cardiac triplex, and Holter monitoring. He has worked at the Cardiology Departments of the Specialized Anticancer Hospital of Piraeus "Metaxa," the Athens Medical Center, the 1st IKA Hospital of Athens, and the General Hospital "Sismanogleio." To date, he remains an external scientific collaborator of the Cardiology Clinic at "Errikos Dynan" Hospital and collaborates with cardiology departments of several other public and private healthcare facilities. Finally, he is a member of the Athens Medical Association, the Hellenic Cardiological Society, the European Society of Prevention and Rehabilitation of Cardiovascular Disease, and the European Society of Heart Failure.