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Topic: Biological Clock What time should you sleep? Towards a New Lifestyle ©All rights reserved. For appointments with specialists: CEFAVIS Medical Center - Quito / Ecuador Toll-free number 1800 CEFAVIS (233284) WEB: http://cefavis.ec/ FACEBOOK: HUNEV: / hunevoficial Club Dr. Albuja: / clubdralbuja CEFAVIS: / centrocefavi .