This trial consists of two parts (part 1 and part 2) and each of these parts is composed of two periods. You can only participate in one part of the trial and you will receive the compound twice: once per period.
In this trial, cerebrospinal fluid will be collected in each part via a lumbar puncture. This procedure will be performed at four different moments during the trial (twice per period). A fine needle will be inserted at the space between two vertebrae in the lower back. This procedure will be performed by an experienced specialist (anesthesiologist).
Für Deutschland: Bitte beachten Sie: Die Arzneimittelstudien finden im niederländischen Groningen statt. Sie müssen Englisch oder Niederländisch sprechen, verstehen und lesen können, um an einer Studie teilnehmen zu können.