11.  This may involve the use of a mask or respirator and could involve prophylactic treatment with antibiotics or other drugs. . . .

12.  Until recently, most advances in infertility involved treatments for women.

13.  Bagger said he has some ideas, none of which involve special treatment for specific districts.

14.  In which case, insurers would need to know what treatment was involved.

15.  Burns did not elaborate on the US concerns, which he said involved the treatment of certain groups in the central European country.

16.  But because the manufacture of the product involves treatment with hydrochloric acid, it was pronounced safe last week by the World Health Organisation.

17.  But the manufacture of the product involves their treatment with hydrochloric acid and it was pronounced safe last week by the World Health Organisation.