The length of the study is about 16 weeks. After the screen visit, if you qualify, there are 12 weeks of twice daily treatment with the drug being tested, followed by a 4 week follow up period. There are a total of 6 study visits and it pays up to $180, if you are eligible and enroll in the study. Would you like to see if you might be eligible to participate in this study? The questionnaire should take about 5 or 10 minutes. Information collected during this telephone call will be retained whether you are eligible for the study or not.