There are multiple definitions:

1. Association for the Study of Human Infertility(English)

   • Embryology /reproduction
   • https://www.who…infertility/en/

2. American Society for Histocompatibility and Immunogenetics(English)

   • international society of professionals dedicated to advancing the science, education, and application of immunogenetics and transplant immunology
   • Immunology, Transplantation, Organizations (international), Genetics
   • https://www.ashi-hla.org/

3. American Safety and Health Institute(English)

   • ALS, CPR
   • Safety and health, Organizations (documentation)
   • http://www.ashiprograms.com/

4. arthritis-specific health index(English)

   • developed by studying its responsiveness to changes in clinical indicators of arthritis severity
   • Rheumatology
   • https://www.jst…/stable/3767289