ruby-hl7/ruby-hl7 — pull request #13 by calebwoods (2013-09-02 15:16:42+00:00)
Title: Fix PID field indexes

The indexes for the PID were off by 1 such that if you tried to call method like `patient_dob` you would get the value for previous element.

This commit fixes this issue and adds a full test for all values of a PID.