TY  - RPRT
TI  - The second twin: retained and unretained.
AU  - J I Adinma
AU  - A O Agbai
PY  - 1995
DO  - 10.1177/004947559502500316
UR  - https://pubmed.ncbi.nlm.nih.gov/7660487/
ID  - 7660487
ER  -