TY  - RPRT
TI  - Geographical pediatrics.
AU  - J H DE HAAS
PY  - 1954
DO  - 10.1111/j.1651-2227.1954.tb15485.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13228042/
ID  - 13228042
ER  -