By World Health Organization(WHO)
By Michael Nelkon, Jon M. Ogborn
By Walshaw, Keith
By Hann, Judith
By Facer, George
By Brecher, Erwin, Gerrard, Mike
By Sen, Paul
By Ingram, Jay
By Anton Radevsky & Emma Sanders
By Levaren
By Cochran, William G., Cox, Gertrude M.
By Marder, Michael P.
By KRUTZ, G
By Allan Jones, Rob Reed, Jonathan Weyers, Jones, Allan, Reed, Rob, Weyers, Jonathan
By Postel, Sandra
By Richards, Jon
By Jennifer Coldrey
By Mellanby, Helen
By Dunlap, R. A.
By Preston, Daryl W.
By Staudenmaier, H.M.
By Edward Harlow, David Lane, Harlow, Edward, Lane, David
By Harrad, Stuart, Batty, Lesley, Diamond, Miriam, Arhonditsis, George
By Whipple, Tom
By Collis, Margaret
By Johnson, George
By Lynn, Denis
By Ringelberg, Joop
By Mondal, Partha Pratim, Diaspro, Alberto