https://jcircadianrhythms.biomedcentral.com/articles/10.1186/1740-3391-11-6
https://jcircadianrhythms.biomedcentral.com/articles/10.1186/1740-3391-11-5
https://jcircadianrhythms.biomedcentral.com/articles/10.1186/1740-3391-11-7