I have learned that standard depends upon the country and sometimes even the region of the country in which you live. I believe that in Europe, UDCA is standard, whereas in the US high low, encouraging and low high, discouraging is standard. So that in Europe UDCA would be what we use to them.
Ross didn't go into major detail, I agree, however what he did present is certainly better than knowing nothing at all. Perhaps you could do better PK.