By Royston, Michael G.
By Lawrence, J. S.
By Davies, Michael
By Jr, James L. A. Webb
By Warren Andiman
By Salisbury, Gay, Laney
By Pisani, Elizabeth
By Joint United Nations Programme on HIV AIDS
By Sasakawa, Yohei, Muroji, Rei
By Dickson, Robert A., Butt, W. Paul
By Britton, Paul
By Lebeau, Marc A., Mozayani, Ashraf
By Watts, Richard A., Scott, David G. I., Mukhtyar, Chetan
By Brown, David S
By Crompton, D.W.T., Montresor, A., Nesheim, Malden C., Savioli, L.
By Christopher Cordess and Murray Cox
By Hjalmar van Marle
By Horton, Richard
By Platt, Colin
By Brian Innes
By Innes, Brian
By Fisher, Barry
By Preedy, Victor R., Patel, Vinood B.
By Meynen, Gerben
By Patel, Vinood B., Preedy, Victor R.
By Houck, Max M., Siegel, Jay A.
By Pokorski, Mieczyslaw