There are multiple definitions:

1. spina iliaca posterior superior(Latin)

   • Anatomy, Skeleton and bone (formation)

2. Structured Interview for Psychosis-risk Syndrome(English)

   • APA, APS, APSS, BLIPS, CAARMS, DSM, GRD, PRS
   • Psychosis, Psychiatry, Risk factor
   • https://doi.org…syt.2020.568982

3. Systemic IgG4-related plasmacytic syndrome(English)

   • AIP, IgG4, IgG4-MOLPS, IgG4-RD, MOLPS, OOI
   • Autoimmunity, Pancreas
   • https://doi.org…155/2012/358371