It could be that Levitt doesn't want investors badgering the clinicians and patients involved in the trials. I believe the investment company Sterling was fined by the SEC for having one of their people enroll in a clinical trial under false pretenses. (Although, admittedly, one couldn't fake AMD.) And, haven't some of us complained when certain reporters have quoted (unnamed) doctors involved in clinical trials when commenting on biotech stocks?
Two trials are listed at clinicaltrials.gov, but it does not give the locations.