Note, for example, that [one patient's father] corresponds to the father of one patient, not a father of one patient.
Hm. So how do you express the concept of an undetermined relative of some patient? The text you quoted would say that [one patient's relative] means the relative of one patient -- how do I express a relative of one patient?
Didn't you just?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Of course, for "every Monday", the last one should have been dated July 22-28. *cough*