Code of ethics in science and research good scientific practice - Vučković-Dekić Ljiljana; Radulović Siniša; Stanojević-Brkić Nevenka; Jelić Svetislav; Borojević Nenad; Stojanović Nevenka; Đurković-Đaković Olgica; Jovović Đurđica; Milenković Pavle (Serbian Medical Society - Dental Section, Belgrade, 2007)