TY  - RPRT
TI  - Signing up for authorship.
AU  - R Horton
AU  - R Smith
PY  - 1996
DO  - 10.1016/s0140-6736(96)90865-x
UR  - https://pubmed.ncbi.nlm.nih.gov/8622331/
ID  - 8622331
ER  -