Kano H.
J Hum Ergol (Tokyo). 1978 Dec;7(2):209-10.
PMID: 756454

Sun X.
China CDC Wkly. 2021 Apr 30;3(18):375-377. doi: 10.46234/ccdcw2021.102.
PMID: 34594887

Emmott LF.
Dent Econ. 1987 Oct;77(10):106, 108, 110.
PMID: 3482571

HAIDER M.
Int Z Angew Physiol. 1962;19:241-51.
PMID: 13903698

Huttunen MO.
Duodecim. 1981;97(20):1722-7.
PMID: 7344921

Berger R, Paran E.
Harefuah. 2002 Jul;141(7):626-30, 665.
PMID: 12187563

OSBORN SH.
Can J Public Health. 1948 Feb;39(2):52-5.
PMID: 18907300