@article {Vetter235, author = {C{\'e}line Vetter and Eva S Schernhammer}, title = {Early, but not late chronotypes, are up during their biological night when working the night shift}, volume = {72}, number = {3}, pages = {235--235}, year = {2015}, doi = {10.1136/oemed-2014-102572}, publisher = {BMJ Publishing Group Ltd}, issn = {1351-0711}, URL = {https://oem.bmj.com/content/72/3/235.1}, eprint = {https://oem.bmj.com/content/72/3/235.1.full.pdf}, journal = {Occupational and Environmental Medicine} }