This definition appears very rarely
See other definitions of ASA
Samples in periodicals archive:
November 2001 Volume 65, Number 11 Alphabet Soup: ASIPP, ASRA and ASA Do We Need Them All? Who Best Takes Care of the Pain Management Anesthesiologist?
Alphabet soup: ASIPP, ASRA and ASA: Do we need them all? Who best takes care of the pain management anesthesiologist? ASA Newsletter 65(11):12-13, November 2001