this edition written and researched by Paula Hardy, Marc Di Duca, Regis St Louis. this edition written and researched by Paula Hardy, Marc Di Duca, Regis St Louis this edition written and researched by Marc Di Duca, Leonid Ragozin. this edition written and researched by Andy Symington, Sally Davies, Regis St Louis. this edition written and researched by Marc Di Duca, Leonid Ragozin this edition written and researched by Paula Hardy, Duncan Garwood & Robert Landon. this edition written and researched by Paula Hardy, Duncan Garwood & Robert Landon this edition written and researched by Andy Symington, Sally Davies, Regis St Louis this edition written and researched by Paula Hardy, Anthony Ham this edition written and researched by Marc Di Duca...[et al.