51.   Alkermes is testing a new version of the drug that would only have to be injected once a month in hopes of improving success rates.

52.   But as traders gained knowledge and experience, the success rate got better.

53.   But Gershkowitz said the success rate among other affected populations had been less, depending on available education and screening programs.

54.   But he prefers hair transplants because the success rate is much better.

55.   But his success rate is such that Texans should watch this race with interest.

56.   But now, he and others say, they have become better at the technique and their success rates are just as good as those with surgery.

57.   But Reardon and Cohn have performed the surgery on women with similar success rates as in male patients.

58.   But that success rate should be viewed only through cultural prisms, according to Omar Khalidi, a professor at the Massachusetts Institute of Technology.

59.   But people who turn to such programs may also be the most difficult cases, and may therefore have especially poor success rates.

60.   But the success rate is low.