References
- Pitheckoff N. Aging in the republic of Bulgaria. Gerontologist. 2017;57:809–815. doi:10.1093/geront/gnx075.
- National Statistical Institute. Women and men in the republic of Bulgaria. 2019 https://www.nsi.bg/sites/default/files/files/publications/WM2018_en.pdf
- National Cancer Institute, NCI dictionary of cancer terms, 19.08d, September 5, 2019, Bethesda, MD, https://www.cancer.gov/publications/dictionaries/cancer-terms/def/nonmelanoma-skin-cancer
- Cook BE Jr., Briggs MC. Management of eyelid malignancies. Rev Ophtalmol. May 2003. https://www.reviewofophthalmology.com/article/management-of-eyelid-malignancies
- Barbaric J, Sekerija M, Agius D. et al. Disparities in melanoma incidence and mortality in South-Eastern Europe: increasing incidence and divergent mortality patterns. Is progress around the corner? Eur J Cancer. 2016;55:47–55. doi:10.1016/j.ejca.2015.11.019.
- Quigley C, Deady S, Hughes E. et al. National incidence of eyelid cancer in Ireland (2005-2015). Eye Lond Engl. 2019;33:1534–1539. doi:10.1038/s41433-019-0437-8.
- Wawrzynski J, Tudge I, Fitzgerald E. et al. Report on the incidence of squamous cell carcinomas affecting the eyelids in England over a 15-year period (2000-2014). Br J Ophthalmol. 2018;102:1358–1361. doi:10.1136/bjophthalmol-2017-310956.
- Paavilainen V, Tuominen J, Pukkala E, et al. Basal cell carcinoma of the eyelid in Finland during 1953−97. Acta Ophthalmol Scand. 2005;83(2):215–220. doi:10.1111/j.1600-0420.2005.00445.x.
- Saari MK, Paavilainen V, Tuominen J, et al. Epidemiology of basal cell carcinoma of the eyelid in South-Western Finland. Graefes Arch Clin Exp Ophthalmol. 2001;239(3):230–233. doi:10.1007/s004170100260.
- Saleh GM, Desai P, Collin JRO. et al. Incidence of eyelid basal cell carcinoma in England: 2000-2010. Br J Ophthalmol. 2017;101:209–212. doi:10.1136/bjophthalmol-2015-308261.
- Cook BE, Bartley GB. Epidemiologic characteristics and clinical course of patients with malignant eyelid tumours in an incidence cohort in Olmsted County, Minnesota. Ophthalmology. 1999;106:746–750. doi:10.1016/S0161-6420(99)90161-6.
- Lim VSY, Amrith S. Declining incidence of eyelid cancers in Singapore over 13 years: population-based data from 1996 to 2008. Br J Ophthalmol. 2012;96:1462–1465. doi:10.1136/bjophthalmol-2012-302032.
- Lin H-Y, Cheng C-Y, Hsu W-M. et al. Incidence of eyelid cancers in Taiwan: A 21-year review. Ophthalmology. 2006;113:2101–2107. doi:10.1016/j.ophtha.2006.06.001.
- Toshida H, Mamada N, Fujimaki T. et al. Incidence of Benign and Malignant eyelid tumors in Japan. Int J Ophthalmic Pathol. 2012;1:1–3. doi:10.4172/2324-8599.1000102.
- Francis IC, Benecke PS, Kappagoda MB. A ten-year hospital survey of eyelid cancer. Aust J Ophthalmol. 1984;12:121–127. doi:10.1111/j.1442-9071.1984.tb01139.x.
- Deprez M, Uffer S. Clinicopathological features of eyelid skin tumors. A retrospective study of 5504 cases and review of literature. Am J Dermatopathol. 2009;31:256–262. doi:10.1097/DAD.0b013e3181961861.
- Asproudis I, Sotiropoulos G, Gartzios C. et al. Eyelid tumors at the university eye clinic of Ioannina, Greece: A 30-year retrospective study. Middle East Afr J Ophthalmol. 2015;22:230. doi:10.4103/0974-9233.151881.
- Xu XL, Li B, Sun XL. et al. Eyelid neoplasms in the Beijing Tongren eye centre between 1997 and 2006. Ophthalmic Surg Lasers Imaging Retina. 2008;39:367–372. doi:10.3928/15428877-20080901-18.
- Chang C-H, Chang S-M, Lai Y-H. et al. Eyelid tumours in southern Taiwan: a 5-year survey from a medical university. Kaohsiung J Med Sci. 2003;19:549–554. doi:10.1016/S1607-551X(09)70505-4.
- Ho M, Liu DTL, Chong KKL, et al. Eyelid tumours and pseudo tumours in Hong Kong: a ten-year experience. Hong Kong Med J Xianggang Yi Xue Za Zhi. 2013;19:150–155.
- Malhotra R, Huilgol SC, Huynh NT. et al. The Australian Mohs database, part I: periocular basal cell carcinoma experience over 7 years. Ophthalmology. 2004;111:624–630. doi:10.1016/j.ophtha.2003.12.003.
- Margo CE, Waltz K. Basal cell carcinoma of the eyelid and periocular skin. Surv Ophthalmol. 1993;38:169–192. doi:10.1016/0039-6257(93)90100-l.
- Marinova T, Malcheva K, Bocheva L, et al. Climate profile of Bulgaria in the period 1988-2016 and brief climatic assessment of 2017. Bul J Meteo Hydro. 2017;22:2–15.
- Dimitrova N, Parkin DM. Data quality at the Bulgarian national cancer registry: an overview of comparability, completeness, validity and timeliness. Cancer Epidemiol. 2015;39:405–413. doi:10.1016/j.canep.2015.03.015.
- National Statistical Institute, NSI in brief. Vision and main development objective. 2020 https://www.nsi.bg/en/content/78/basic-page/nsi-brief
- Forman D, Bray F, Brewster DH, et al., eds. Cancer incidence in five continents. IARC Sci Publ. 2013;X:164. Lyon, IARC.
- NE B, Day NE. Statistical methods in cancer research. Volume II–The design and analysis of cohort studies. IARC Sci Publ. 1987;82:1–406.
- Gilchrest BA, Garmyn M, Yaar M. Aging and photoaging affect gene expression in cultured human keratinocytes. Arch Dermatol. 1994;130:82–86. doi:10.1001/archderm.1994.01690010086013.
- Xiang F, Lucas R, Hales S. et al. Incidence of nonmelanoma skin cancer in relation to ambient UV radiation in white populations, 1978-2012: empirical relationships. JAMA Dermatol. 2014;150:1063–1071. doi:10.1001/jamadermatol.2014.762.
- Lee SB, Saw SM, Au Eong KG. et al. Incidence of eyelid cancers in Singapore from 1968 to 1995. Br J Ophthalmol. 1999;83:595–597. doi:10.1136/bjo.83.5.595.
- Sihota R, Tandon K, Betharia SM. et al. Malignant eyelid tumors in an Indian population. Arch Ophthalmol Chic IL 1960. 1996;114:108–109. doi:10.1001/archopht.1996.01100130104031.
- Zlatarova Z, Dokova K, Kamburova D. Incidence of eyelid malignancies in Varna region. Scr Sci Medica. 2009;41:35–38. doi:10.14748/ssm.v41i1.462.