11.   Curdt-Christiansen, a Canadian with the International Civil Aviation Organization, said the risk appeared to be greater on long, crowded flights.

12.   The risks appeared in women with and without diabetes and high blood pressure, conditions that contribute to heart disease.

13.   They have been linked to cancer but experts said that in many cases the exposures were low enough that the risk appears to be small.

14.   These are linked to cancer, although experts said in many cases the exposures were low enough that the risk appears to be small.

15.   Inflationary risks have appeared in Britain and Italy.