Dr Davidovic is a geriatrician, and founder of the Chair of gerontology at University of Belgrade, geriatric section of Serbian Medical Association and editor of the first book of geriatric medicine in Serbia. He was the member of the IAGG Council, and recently EUGMS and U.E.M.S board. Member of the editorial board of Advances in gerontology and American Journal of Life Sciences. Member of the European experts panels: Research on ageing: priorities for the European region and European undergraduate curriculum in geriatric medicine.

Education in geriatrics and gerontology, Approach to theories of ageing: "Ageing puzzle", "Genetic instability -the key of longevity ?"," Old age as a privilege of the “selfish ones” Clinical geriatric medicine, specially pharmacotherapy and ageing of the systems.