TY  - RPRT
TI  - Photoperiodic effects on tumor development and immune function.
AU  - R J Nelson
AU  - J M Blom
PY  - 1994
DO  - 10.1177/074873049400900305
UR  - https://pubmed.ncbi.nlm.nih.gov/7772792/
ID  - 7772792
ER  -