Lachlan , the direct answer to your question is ,Yes , this is an opinion I maintain on the basis of the clinical indicators I have seen over the past twenty five years and , none that I am aware of. As a working physio in my own practice I have often heard the call to further substantiate my claims about referred events such as with PFS. At one time I left my practice to pursue research aims after promises of support, which, unfortunately felll short of my needs. having resumed my normal practice I find little time or facilities available to concentrate efforts towards RCT's etc. I have been publishing on various sites , noteably , the Rehabedge site for a number of years. Should you be interested in going over the topic in more detail I would suggest you begin there with a key word search. I also lecture here in Melbourne when these are arranged for me.
Cheers