International Association Nitrox & Technical Divers (IANTD)

Ambient Pressure Diving Ltd.

Delta P Technology

DiveXpress

Closed Circuit Research

The British Diving Safety Group

Beyond the Blue Magazine

Rebreather World

In Silence

The DecoStop

Comité Coordenador de Centros de Medicina Hiperbárica

Diving Medicine Online

Divers Alert Network

Trimix Divers

Câmara Municipal de Matosinhos