What does IPSO stand for?

What does IPSO mean?

IPSO	International Society of Pediatric Surgical Oncology Medical » Oncology
IPSO	International Psychoanalytical Studies Organization Miscellaneous » Unclassified
IPSO	Izationisraeli Palestinian Science Organization Miscellaneous » Unclassified
IPSO	International Programs And Services Office Miscellaneous » Unclassified
IPSO	International Programs Services Office Miscellaneous » Unclassified
IPSO	International Postdoctoral Service Office Miscellaneous » Unclassified
IPSO	Intellectual Property Student Organziation Miscellaneous » Unclassified