TY  - RPRT
TI  - Follow that key.
AU  - H Schweisfurth
AU  - K Haeseler
PY  - 1986
DO  - 10.1016/s0140-6736(86)91363-2
UR  - https://pubmed.ncbi.nlm.nih.gov/2871363/
ID  - 2871363
ER  -