There are multiple definitions:

1. fee-for-service(English)

   • ABN
   • Financial issues

2. failure-free survival(English)

   • defined as the absence of relapse, non-relapse mortality or addition of another systemic therapy, and has been proposed as a potential endpoint for clinical trials, but its use has only been reported for single-center studies
   • Clinical trials

3. forefoot strike(English)

   • refers to the relationship with peak vertical instantaneous loading rate
   • GRF, MFS, RFS, VILR
   • Musculoskeletal system, Biophysics
   • https://doi.org…14.2016.1225970