1. Prevalence of sleep disturbances in Chinese healthcare professionals: a systematic review and meta-analysis;Qui;Sleep Med,2020
2. Poor sleep is a health crisis for physicians and nurses;Kalmbach;Sleep Med,2020
3. Human chronotypes in the north;Borisenkov;Hum Physiol,2010
4. Latitudinal cline of chronotype;Leocadio-Miguel;Sci Rep,2017
5. Sleep characteristics, chronotype and winter depression in 10–20-year-olds in northern European Russia;Borisenkov;J Sleep Res,2015