**Author details**

Pavol Švorc Department of Physiology, Medical Faculty Safarik's University, Košice, Slovak Republic

\*Address all correspondence to: svorc@upjs.sk

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

**11**

*Introductory Chapter: Chronobiology - The Science of Biological Time Structure*

[10] Knutsson A, Bøggild H.

Gastrointestinal disorders among shift workers. Scandinavian Journal of Work, Environment & Health. 2010;**36**:85-95

[11] Wang F, Yeung KL, Chan WC, Kwok CC, Leung SL, Wu C, et al. A meta-analysis on dose-response relationship between night shift work and the risk of breast cancer. Annals of

Oncology. 2013;**24**:2724-2732

2014;**15**:709-720

2014;**71**:313-322

[12] Wang F, Zhang L, Zhang Y, Zhang B, He Y, Xie S, et al. Metaanalysis on night shift work and risk of metabolic syndrome. Obesity Reviews.

[13] Hammer GP, Auvinen A, De

Stavola BL, Grajewski B, Gundestrup M, Haldorsen T, et al. Mortality from cancer and other causes in commercial airline crews: A joint analysis of cohorts from 10 countries. Occupational and Environmental Medicine.

*DOI: http://dx.doi.org/10.5772/intechopen.88583*

[1] Halberg F. Circadian system phase— An aspect of temporal morphology, producers and illustrative examples. In: von Mayerbach H, editor. The Cellular Aspects of Biorhythms. Berlin: Springer;

[2] Vaze KM, Nikhil KL, Sharma VK. Circadian rhythms. Resonance.

Madrid JA. The chronobiology, etiology

[3] Garaulet M, Ordovás JM,

[4] Course Booklet from 4th

Nevsehir, Turkey; 2006

2016;**37**:584-608

Postgraduate the Course of Medical Chronobiology and its Applications in

[5] Potter GDM, Skene DJ, Arendt J, Cade JE, Grant PJ, Hardie LJ. Circadian rhythm and sleep disruption: Causes,

countermeasures. Endocrine Reviews.

[6] Folkard S. Do permanent night workers show circadian adjustment? A review based on the endogenous melatonin rhythm. Chronobiology International. 2008;**25**:215-224

[7] Arendt J, Middleton B, Williams P, Francis G, Luke C. Sleep and circadian phase in a ship's crew. Journal of Biological Rhythms. 2006;**21**:214-221

[8] Arendt J. Shift work: Coping with the biological clock. Occupational Medicine

wakefulness? International Archives of Occupational and Environmental

(London). 2010;**60**:10-20

[9] Axelsson J, Akerstedt T, Kecklund G, Lowden A. Tolerance to shift work—How does it relate to sleep and

Health. 2004;**77**:121-129

metabolic consequences, and

and pathophysiology of obesity. International Journal of Obesity.

1967. pp. 20-48

**References**

2014;**19**:175-189

2010;**34**:1667-1683

*Introductory Chapter: Chronobiology - The Science of Biological Time Structure DOI: http://dx.doi.org/10.5772/intechopen.88583*
