TY  - RPRT
TI  - Circannual changes in ventricular function assessed by echocardiography.
AU  - Y Saito
AU  - K Tamura
AU  - D C Hillman
AU  - G Cornélissen
AU  - F Halberg
UR  - https://pubmed.ncbi.nlm.nih.gov/1628522/
ID  - 1628522
ER  -