TY  - RPRT
TI  - Physiological changes in early pregnancy.
AU  - F E Hytten
PY  - 1968
DO  - 10.1111/j.1471-0528.1968.tb02915.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5702355/
ID  - 5702355
ER  -