Yes, but if you continue reading the start of the very next paragraph addresses this.

>The trial was far too small to be conclusive, >said Dr. Gasser, whose co-authors include Dr. Doblin, >Dominique Holstein of UniversityHospital Zurich and Rudolf >Brenneisen of the University of Bern.

they go on to say that

>“It’s a proof of concept,” Dr. Doblin said. >“It shows that this kind of trial can be done safely, and >that it’s very much worth doing.” --

which is important. This sort of research all but halted in the mid-60s. In fact, the reason LSD even made it into popular culture can be a credited to the fact that many who tried it in clinical trials liked it enough to take it home a share. Of course, that is a bit of a dump down version, but not too far from the truth.