11.  Because of the complex and often combustible nature of human chemistry, health practitioners urge people to consult their physicians and pharmacists before beginning herbal treatments.

12.  Before he began treatment, he says, he had intercourse with his wife only four times a year.

13.  -- After the bone marrow engrafted and patients recovered from the chemotherapy, doctors would begin treatment with the potent anti-cancer drug Taxol.

14.  A few days later he was on his way back to Green Bay to begin treatment.

15.  A few weeks ago, Cal began a treatment with some medicine that burns off skin cancers.

16.  A week later, he was diagnosed with lung cancer and began radiation treatment, which was soon supplemented by chemotherapy.

17.  After beginning treatment, he saw a man yelling at a woman on a bench and flashing a knife at her.

18.  After her cancer was diagnosed, she began treatment at the three-year-old Center for Complementary Medicine at the University of Pittsburgh Medical Center Shadyside Hospital.

19.  After some small talk, he pleaded with her to accept a ride to a shelter where she could sleep and begin treatment for drug addiction.

20.  After several delays, the Flyers coach is scheduled to begin chemotherapy treatments for multiple myeloma, an incurable form of bone-marrow cancer.