By Krailing, Tessa, etc.
By Truijens, Hannie
By Gaines, Keith
By Fidge, Louis
By Johnson, Vaughan, Williams, Trefor
By Thomas, A.J., Thomas, M.D.
By Williams, Trefor, etc., Wetton, Noreen, Moon, Alysoun
By Health Education England
By Hopkins, Stephen
By Peter Smith, A. Inglis
By Smith, Peter, Inglis, A.
By Chapple, S.
By National Curriculum Council