If you are assigned to the ABLC Group, you will receive ABLC once a week by vein over 4-6 hours, for up to 6 weeks (from Day 1 through Day 42). If the creatinine level increases, the dose will be divided into 2 doses per week. The drug may be given in the hospital (if you are admitted to the hospital before or during the study) or at an outpatient treatment center.