The auriculo-ventricular orifice is an oblique slit[.]

You were a fool to cross that busy road without looking.

Currently, patients and staff appear to face twin threats of constraints of time and resources (e.g. difficulties getting appointments and limited consultation time) and increasing technicalization which reduces the capacity or opportunities for face-to-face communication.

As in much of biology, the most satisfying truths in ecology derive from manipulative experimentation. Tinker with nature and quantify how it responds.