More sleep will bring more serotonin and less suicide in Japan.
Kohyama
Jun
J
D006801:Humans; D007564:Japan; D012701:Serotonin / Q000378:metabolism*; D012892:Sleep Deprivation / Q000150:complications* / Q000208:ethnology; D013406:Suicide, Attempted / Q000208:ethnology / Q000517:prevention & control* / Q000706:statistics & numerical data
D012701:Serotonin