There are multiple definitions:

1. Pediatric Health Information System(English)

   • HIS
   • Data exchange, Medical informatics, Pediatrics
   • https://doi.org…47.2019.1680088

2. penetrating head injury survivor(English)

   • AFQT, CT, EEG, IQ, PHI, PTE, TBI, VHI, VHIS
   • Brain (dys)function, Injury
   • https://doi.org…63521-1.00033-9