Early OSSAA teams operated in a range of localities across the islands of Flores and Timor, but mainly:
– Hospital of St Damian and St Raphael in Flores.
– Marianum Hospital at Halilulik in West Timor.
– Dili and Baucau hospitals in Timor Leste.
The Flores and West Timor hospitals are now precluded from using foreign surgeons. Tonga recently hosted an OSSAA ENT team.