Add hospital Medication example

[rlindstrm]

Add hospital Medication example that would allow interesting dosage. Add contrasts, etc for lab and imaging.

[Monstermanu]

Some examples from the French Medication IG (WIP) based on hospital use cases

• 4g/20mn perfusion every 6 hours
• decreasing dose
• in case of pain with max per administration and max per day
• calculated dose

Those are some examples that seem to fit the "interesting dosage" description. But in the IG all the examples have been drafted with hospital context in mind.