1. Clinical trials in homoeopathy;Kleijnen;BMJ,1991
2. A controlled evaluation of homoeopathic preparations in the treatment of influenza-like syndromes;Ferley;Lancet,1989
3. Zur Behandlung der Otitis media mut Pulsatilla;Mossinger;Der Kinderarzi,1985
4. Upper respiratory tract infection in children;de Lang;Homoeopathy International R & D Newsletter,1993
5. Rhinitis and secretory otitis media: a possible role of food allergy;Pelikan,1987