Crossword Puzzle Well-formed org.?

Clue: Well-formed org.?

Organization formed by the Treaty of Versailles (LEAGUEOFNATIONS with 15 letters)
Lack of organisation? (ZED with 3 letters)
Welland's counterpart (SOO with 3 letters)
Health maintenance organization? (SPA with 3 letters)
Modified organisms (ECADS with 5 letters)
Non-essential organ (SPLEEN with 6 letters)
Unwilling to get organized (ANTIUNION with 9 letters)
Organic soother (ALOE with 4 letters)
Organ that's sensitive to vibrations (EAR with 3 letters)
Pioneering organizer (PALMPILOT with 9 letters)