ORIGINAL PAPER
Ladislav TURECKÝ, Viera KUPČOVÁ, Monika ĎURFINOVÁ, Eva UHLÍKOVÁ: Changes in lipoprotein metabolism parameters in patients with fatty liver disease   

CLINICAL STUDIES
Gustáv KOVÁČ, Anna PORUBENOVÁ, Ivan MALÍK, Stanislav ORAVEC, Štefan KEČKÉŠ, Alena KRISTOVÁ, Michal FARKAŠ, Pavel BLAŽÍČEK, Vladimír HERIBAN, Jozef ŠUVADA: Notes on laboratory diagnostics of Covid-19       
Sergiy SNIZHKO, Igor SHEVCHUK: Evaluation of the effectiveness of various types of surgical treatment of upper descending purulent mediastinitis        
Dmytro Dmytriiev, Oleksandr Nazarchuk, Mariia Faustova, Yuliana Babina, Kostyantin Dmytriiev, Oleksandr DOBROVANOV, Karol KRALINSKÝ: Local anesthetics contributing the struggling biofilm-forming activity of S. aureus colonizing surfaces of venous catheters. Multicenter clinical trial        

REVIEWS
Tetiana I. LIADOVA, Mykola M. POPOV, Diana M. DOROSH, Alexander V. MARTYNENKO, Olga V. VOLOBUEVA, Iryna V. KADYHROB, Olga G. SOROKINA, Alla P. GAMILOVSKAYA, Olesya V. GOLOLOBOVA, Natalia V. SHEPYLIEVA: Assessment of immunological effects of melatonin in immunodeficient population: A systematic review of 180 190 randomized controlled trials        
Andrea ZAŤKOVÁ, Helena GLASOVÁ, Richard IMRICH: Advances in research of alkaptonuria and its potential treatment    

   
CASE REPORT
Veronika JANKOVIČOVÁ, Margita BELICOVÁ: Aortic dissection