(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:

COPD (Chronic Obstructive Pulmonary Disease)

This study will compare the effectiveness of two investigational medications in people with COPD. The trial will last 35 days and require three clinic visits and at least one telephone call. Candidates must be at least 45 and have used the Spiriva HandiHaler.

The research site is in Panama City, Fla.

More information

Please see http://www.centerwatch.com/patient/studies/cat44.html.

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Diabetes Mellitus Types I and II

This study is for adults who are using metformin (Glucophage) to treat type 2 diabetes, but are having difficulty controlling blood sugar levels. If you qualify, the study may last up to 9 months, and you can continue taking current medications. All study related treatments and procedures are provided at no cost, and you may be compensated for time and travel. Health insurance isn't required.

The research site is in Suffolk, Va.

More information

Please see http://www.centerwatch.com/patient/studies/cat55.html.

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Chronic Myeloid Leukemia

This study will evaluate the effectiveness and safety of an experimental drug, flavopiridol, in treating acute leukemias. Candidates with acute leukemias must be ages 1 to 17 years old to participate.

The research site is in Cincinnati, Ohio.

More information

Please see http://www.centerwatch.com/patient/studies/cat761.html.

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