TY  - RPRT
TI  - Estimating the correlation among siblings.
AU  - K J Keen
PY  - 1993
DO  - 10.1111/j.1469-1809.1993.tb00904.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8179293/
ID  - 8179293
ER  -