There are multiple definitions:

1. forearm blood flow(English)

   • measured via strain-gauge venous occlusion plethysmography
   • BMI, BP, CVD, ET-1, ETA, HDL, LDL, PMW, RPE
   • Hemodynamics
   • https://doi.org…eart.00674.2022

2. Frankfurter Beschwerde Fragebogen(German)

   • Frankfurt Complaint Questionnaire
   • Questionnaire, Psychiatry, Memory, Anxiety/fear, Mental health, Disability
   • https://link.sp…2-82842-3/1.pdf

3. fingertip blood flow(English)

   • ELISA, LDI, NFC, PRP, SSc
   • Hemodynamics, Anatomy, Laser technique, Dermatology, Rheumatology
   • https://doi.org…742.2014.926566