I was patient #4 when I arrived in April 2017. The study was grueling. I wore an ECG cap for a sleep study (I didn't get much sleep); had a difficult spinal tap; donated 10 million blood stem cells; had 29 vials of blood taken in one go (fun morning!); took extensive cognitive exams; spent three hours relating my entire health history to the lead clinician in the study (Brian Walitt); and on and on. I stayed as an inpatient for two weeks, with a weekend off. 6/