;EHR p12
; DFN = The patient this problem belongs to
; TARGET = Location of object report
; VIEN = Visit ien (optional) [IF VIEN PASSED, PROBLEM(S) RETURNED ARE 'Purpose of Visit' POV]
; PARAM = A All problems [IF VIEN NULL AND PARAM NULL, DEFAULTS TO 'L' LAST DATE PROBLEM]
; C Active problems
; L Last date problem
; Problem ien