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Maria L. Valcheva-Traykova, Trayko T. Traykov and Georgeta S. Bocheva

;33(4):869-73. 8. Afanas'ev IB, editor. Superoxide ion: Chemistry and biological implications. Volume I. Boca Raton: CRS Press; 1991. 9. Halliwell B, Gutteridge JM, editors. Free Radicals in Biology and Medicine, 4th ed. Oxford, UK: Oxford University Press; 2007. 10. Hicks M, Wong LS, Day RO. Antioxidant activity of Propylthiouracil. Biochem Pharmacol. 1992:43(3):439-44. 11. Traykova M, Traykov T, Hajimitova V, Krikorian K, Boyadjieva N. Antioxidant properties of Galantamine hydrobromide. Z Naturforschung. 2003:58c:361-5. 12. Todorov, V. Hadjimitova V

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Nina P. Ayvazova, Violeta S. Rilcheva, Emiliana I. Konova, Roumen G. Roussev and Pavel I. Rashev

;114(11):2125-34. 9. Qing-Xiang Sang, Dym M, Bryer SW. Secreted Metalloproteinases in Testicular Cell Culture. Biol Reprod. 1990;43:946-55. 10.World Health Organization. WHOlaboratory manual for the Examination and processing of human semen. 5 ed. Geneva: World Health th Organization; 2010. 11. Lukanov T, Lichev D, Konova E, Emin A, Ayvazova N, Roussev G R, et al. Investigation of Sperm Dna Fragmentation By Sperm Dna Integrity Assay. Jof IMAB. 2008;1:11-4. 12. Lukanov T, Lichev D, Konova E, Emin A, Ayvazova N, Roussev G R, et al. Flow

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Paulina Tr. Vladova, Sergey D. Iliev and Savelina L. Popovska

References 1. Pape F, Niederle B, Costa F, Gross D, Kelestimur F, Knigge U, et al. ENETS Consensus Guidelines for Neuroendocrine Neoplasms of the Appendix (Excluding Goblet Cell Carcinomas). Neuroendocrinology. 2016;103(2):144-52. 2. Hsu C, Rashid A, Xing Y, Chiang Y, Chagpar R, Fournier K, et al. Varying malignant potential of appendiceal neuroendocrine tumors: importance of histologic subtype. J Surg Oncol. 2013;107:136-43. 3. Carbonero R, Capdevila J, Herrero G, Perez J, Prado M, Orduna V, et al. Incidence, patterns of care and prognostic

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Dobromir D. Dimitrov, Tsvetomir M. Ivanov, Tashko S. Deliyski, Sergey D. Iliev, Emil T. Filipov, Martin P. Karamanliev, Tatqna M. Betova, Savelina L. Popovska, Nataliya P. Chilingirova, Izabela P. Georgieva, Slavcho T. Tomov and Grigor A. Gortchev

, Weir R, Calcetera N, Quirke P, Carmack S. Pathologic processing of the total mesorectal excision. Clin Colon Rectal Surg. 2015;28(01):43-52. 10. Langer D, Tučková I, Kalvach J, Ryska M. Can robotic rectal cancer surgery improve quality of total mesorectal excision? Rozhl Chir. 2017;96(2):69.

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Ginka H. Rayanova, Silvia S. Ganeva, Katya N. Todorova, Tsvetan H. Lukanov and Svetla P. Gecheva

References 1. Galik S, Oakhill J, Steinberg G. Adipose tissue as an endocrine organ. Mol Cell Endocrinol. 2010;316(2):129-39. 2. Karastegiou K, Mohamed-Ali V. The autocrine and paracrine roles of adipokines. Mol Cell Endocrinol. 2010;318(1-2):69-78. 3. Koleva D, Orbetzova M, Atanasova P. Adipose tissue hormones and appetite and body weight regulators in insulin resistance. Folia Med. 2013;55(11):25-32. 4. Deng Y, Scherer P. Adipokines as novel biomarkers and regulators of the metabolic syndrome. Ann N Y Acad Sci. 2010;1212:E1-E19. doi: 10

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Nikolai V. Kolev and Ljudmila I. Halacheva

References 1. Corey DM, Hurley MM, Foundas AL. Right and left handedness defined; A multivariate approach using hand preference and Hand performance measures. Neuropsychiatry Neuropsychol Behav Neurol. 2001;14(3):144-52. 2. Bryden PJ, Pryde KM, Roy EA. A performance measure of the degree of hand preference. Brain Cogn. 2000;44(3):402-14. 3. Petersen P, Petrick M, Connor H, Conklin D. Grip strength and hand dominance: challenging the 10% rule. Am J Occup Ther. 1989;43(7):444-7. 4. Clerke A, Clerke J. A literature review of the effect of

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Rositsa V. Sandeva, Stanislava M. Mihaylova and Gergana N. Sandeva

. 2005;85(2):495-522. 5. Paul RF, Hassan M, Nazar HS, Gillani S, Afzal N, Qayyum I. Effect of body mass index on serum leptin levels. J Ayub Med Coll Abbottabad. 2011;23(3):40-43. 6. Hellström L, Wahrenberg H, Hruska K, Reynisdottir S, Arner P. Mechanisms behind gender differences in circulating leptin levels. J Intern Med. 2000;247(4):457-62. 7. Lee MJ, Wang Y, Ricci MR, Sullivan S, Russell CD, Fried SK. Acute and chronic regulation of leptin synthesis, storage, and secretion by insulin and dexamethasone in human adipose tissue. Am J Physiol

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Dobromir D. Dimitrov, Veselin I. Kirov, Borislav A. Ignatov, Boris D. Tsankov, Hyuliya E. Feradova, Vasya Vutova, Silviya P. Hristova, Vasil D. Nanev, Genoveva B. Valcheva and Tashko S. Deliyski

References 1. Wikipedia, the Free Encyclopedia [Internet], Melanoma, [cited 2013Jan 18]. Available from: http://en.wikipedia.org/wiki/Melanoma 2. Dimitrova N, Vukov M, Valerianova Z, editors. Cancer incidence in Bulgaria 2009. Vol XX. Bulgarian National Cancer Registry: Publisher “AVIS-24” Ltd.; 2011. 3. North JH Jr, Spellman JE. Role of sentinel node biopsy in the management of malignant melanoma. Oncology (Huntington). 1996; 10(8): 1237-42. 4. Lingam MK, Mackie RM, McKay AJ. Intraoperative

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Maya D. Markova, Irina V. Chakarova, Ralitsa S. Zhivkova, Venera P. Nikolova, Valentina P. Hadzhinesheva and Stefka M. Delimitreva

References 1. Wade RH. On and around microtubules: an overview. Mol Biotechnol. 2009;43(2):177-91. 2. Fırat-Karalar EN, Stearns T. The centriole duplication cycle. Philos Trans R Soc Lond B Biol Sci. 2014;369(1650): pii: 20130460. 3. Gardner MK, Zanic M, Howard J. Microtubule catastrophe and rescue. Curr Opin Cell Biol. 2013;25(1):14-22. 4. Kamath K, Oroudjev E, Jordan MA. Determination of microtubule dynamic instability in living cells. Methods Cell Biol. 2010;97:1-14. 5. Bryantseva SA, Zhapparova ON. Bidirectional transport of

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Tsvetelina V. Petkova-Marinova, Boryana K. Ruseva and Bisera D. Atanasova

, Tuttle MS, Powelson J, Vaughn MB, Donovan A, Ward DM, et al. Hepcidin regulates cellular iron efflux by binding to ferroportin and inducing its internalization. Science. 2004;306(5704):2090-3. 45. Zhao N, Zhang AS, Enns CA. Iron regulation by hepcidin. J Clin Invest. 2013; 123(6):2337-43. doi: 10.1172/JCI67225. PubMed PMID: 23722909; PubMed Central PMCID: PMC3668831. 46. Walston J, Xue Q, Semba R, Ferrucci L, Cappola A, Ricks M, et al. Serum antioxidants, inflammation, and total mortality in older women. Am J Epidemiol. 2006;163(1):18-26. 47. Tron K