TY  - GEN
AU  - Singer,J
TI  - A method for determining the size of internal pilot studies
SN  - 0277-6715
PY  - 1999///0810
KW  - Humans
KW  - Pilot Projects
KW  - Sample Size
N1  - Publication Type: Comment; Letter
UR  - https://doi.org/10.1002/(sici)1097-0258(19990515)18:9<1151::aid-sim109>3.0.co;2-6
ER  -