TY  - GEN
AU  - Kibel,M A
AU  - Power,M
TI  - How rare is rare?
SN  - 0269-5022
PY  - 1990///0830
KW  - Epidemiologic Methods
KW  - Research Design
KW  - Terminology as Topic
N1  - Publication Type: Letter
UR  - https://doi.org/10.1111/j.1365-3016.1990.tb00659.x
ER  -