TY  - RPRT
TI  - Simple method for repeated blood-sampling.
AU  - G A Shepherd
AU  - M C Champion
PY  - 1980
DO  - 10.1016/s0140-6736(80)91235-0
UR  - https://pubmed.ncbi.nlm.nih.gov/6103160/
ID  - 6103160
ER  -