1. Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, 03-195 Warsaw, Poland
2. Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, N.C.S.R. “Demokritos”, Agia Paraskevi, 15341 Athens, Greece
3. Isotope Therapy Department, National Medical Institute of the Ministry of the Interior and Administration, 02-507 Warsaw, Poland