TY  - RPRT
TI  - Natural calculators, polydactyly, and the diagnostic process.
AU  - W Beautyman
PY  - 1982
DO  - 10.1016/s0140-6736(82)90900-x
UR  - https://pubmed.ncbi.nlm.nih.gov/6126776/
ID  - 6126776
ER  -