Graduate of the Peoples’ Friendship University of Russia on specialty “General Medicine”. During the period from 2010 to 2012, she studied at the clinical residency specializing in paediatrics on the basis of Neonatology and Cardiology departments of the Moscow 6-th Children's Infectious Clinical Hospital, as well as the departments of Hematology, Endocrinology, Cardio-rheumatology and Pulmonology of Morozov City Children's Clinical Hospital in Moscow. From 2013, she has been undergoing postgraduate studies on the basis of the Russian Medical Academy of Postgraduate Education. Dr. Holtzman worked at the Department of Cardio-rheumatology and Pulmonology at Morozov City Children's Clinical Hospital as a paediatrician.  She has a number of scientific publications on the health of children of school age, pathogenesis and etiology of anorexia nervosa. Possesses the following certificates: GCP, vaccine prophylaxis, examination of health care and health care quality management by Department of Healthcare at Russian Medical Academy of Postgraduate studies. Dr. Holtzman was awarded with a certificate of ICH GCP for Investigators on the basis of Peoples ' Friendship University, Moscow, 2012. 

Hematology, Endocrinology, Cardio-rheumatology and Pulmonology.