TY  - RPRT
TI  - The vanishing twin.
AU  - H J Landy
AU  - L Keith
AU  - D Keith
PY  - 1982
DO  - 10.1017/s0001566000008278
UR  - https://pubmed.ncbi.nlm.nih.gov/7170918/
ID  - 7170918
ER  -