There are multiple definitions:

1. interactive laboratory system(English)

2. immediate life support(English)

   • Critical Care, Emergency medicine

3. interleaving stimulation(English)

   • cs-ILS, DBS, DDK, ET, LDDK, SID, TS, VAS
   • Neurology, Logopedics and phonetics
   • https://doi.org…000000000000127