this edition written and researched by Damian Harper, Dai Min. this edition written and researched by Duncan Garwood, Paula Hardy. this edition written and researched by Ryan Ver Berkmoes. this edition written and researched by Anja Mutic and Peter Dragicevich. this edition written and researched by Virginia Maxwell. this edition written and researched by Neil Wilson, Mark Baker this edition written and researched by Anthony Ham and eight others. this edition written and researched by Becky Ohlsen ... [et al]. this edition written and researched by Cristian Bonetto and nine others. this edition written and researched by Carolyn Bain, Alexis Averbuck.