TY  - RPRT
TI  - How many eggs?
AU  - Marc J N C Keirse
AU  - Frans M Helmerhorst
PY  - 2004
DO  - 10.1136/bmj.329.7461.302
UR  - https://pubmed.ncbi.nlm.nih.gov/15297321/
ID  - 15297321
ER  -