Pascal Monett, the NHS is pursuing a range of research projects at the moment all in partnership with others such as universities and potential suppliers to the health business. Sometimes this can introduce limitations as to who can participate. While that may be necessary or even desirable, it may also rule out some whose co-morbidities may well be markers for their major condition. Thus robbing some evidence from the studies.
Sadly, nothing is perfect and wishful thinking is endless.