Create models to base dosing on lab values

[kristentaytok]

Problem Statement

Synthea has observations.csv files that provide lab values for each patient.

In order to represent realistic clinical decision making in Synthea, the simulator should account for dose adjustments based on a patient's lab vales.
For example, levothyroxine dosing based on T3/T4 lab values.

Criteria for Success

• Create a feature in the MDT (or Synthea) to adjust probabilities of medication order doses based on lab values (e.g., CrCl < 60)

Additional Information

• May be able to use OpenFDA and NLP: https://open.fda.gov/apis/drug/label/
• Also use logic based on work in issue #69 to select doses