This is a randomized, double-blind, placebo- and moxifloxacin (open-label)-controlled, 4-period crossover study.

Inclusion Criteria:

• Women and men aged 18 to 55 years inclusive.
• Healthy as determined by the investigator on the basis of medical history, physical examination, clinical laboratory test results, vital signs, and 12-lead electrocardiogram (ECG).

Exclusion Criteria:

• History of any clinically important drug allergy.
• Positive findings of urine drug screen (eg, amphetamines, barbiturates, benzodiazepines, cannabinoids, cocaine, and opiates).