MELATONIN EXCRETION AND SALIVARY CORTISOL IN HOSPITAL NURSES DURING 12-HOUR SHIFTS Journal title: Българско списание за обществено здраве (Bulgarian Journal of Public Health) Authors: Irina Cekova, Raliza Stoyanova, Katya Vangelova Subject(s):
CIRCADIAN DISRUPTION IN SHIFT WORK AND RISK OF HORMONE-RELATED CANCERS Journal title: Българско списание за обществено здраве (Bulgarian Journal of Public Health) Authors: Katia Vangelova Subject(s):