13. Use of any over-the-counter or prescription medications within 7 days or 5 half-lives (whichever is longer), prior to receiving the first study treatment. However, if a subject has to use medication within 7 days of the first study drug administration, he/she can be included in the study the study if according to the investigator the medication is not relevant within the context of the trial. Paracetamol (up to 2 g per day) for analgesia, and hormonal birth control medication will be allowed.