1. See World Health Organization asthma web page at http://www.who.int/mediacentre/factsheets/fs307/en/.
2. Bruce, I.; Cuenoud, B.; Keller, T. H.; Pilgrim, G. E.; Press, N.; Le Grand, D. M.; Ritchie, C.; Valade, B.; Hayler, J.; Budd, E.PCT Int. Appl. (2004) WO 2004096797.
3. The Henry reaction: recent examples