The Citation Index seems such an obvious need why go to a lot of trouble organizing a "trial"? It would inconclusive
anyhow since the most important value of the C.I. is in the scope of its cross-referencing between fields. There may be a
lot of human genetics you don't know about buried in journals no geneticist ever reads. But if there is no other way,
a trial run can be organized. I would rather start with a defined list of journals, e.g., those covered now in current contents,
rather than to try to spell out a field.