# Real-life examples draft

Here below is an examples of a customer that we helped building profiles.

## Nictiz
Nictiz is the centre of expertise for standardization and eHealth in The Netherlands. HL7 Netherlands core and MedMij profiles are published on Simplifier. MedMij is a national project that aims to give Dutch citizens integrated access to all their health data in one personal health environment. FHIR is used as a standard to exchange health information between the involved parties. The profiles are based on standardized clinical building blocks called Health and Care Information Models (HCIM).

Nictiz has defined a couple of search parameters for The Netherlands. One of them is the Medications-periodofuse, which can be used to search on medication use in the past, present or future within the specified time period. The code of this search parameter is `periodofuse` and it can be used for the following types of Resources: MedicationRequest and MedicationDispense, provided they include the zib-Medication-PeriodOfUse extension. 

{{render:NictizSTU3/Medications-periodofuse}}

Below are a couple of examples of how to use this search parameter.

1. Search for MedicationRequests for medication use since 1st of January 2010

    `https://vonk.test-nictiz.nl/MedicationRequest?periodofuse=ge2010-01-01`

2. Search for MedicationDispenses for medication use between 1st of January 2010 and 31st of December 2011

    `https://vonk.test-nictiz.nl/MedicationDispense?periodofuse=ge2010-01-01&periodofuse=le2011-12-31`

In the XML code of the search parameter, you can see the code (periodofuse), base Resources (MedicationRequest and MedicationDispense), data type (date), the search expression and the comparators that are allowed (eq, le, ge). 

{{xml:NictizSTU3/Medications-periodofuse}}