digraph combined_diagram {
    margin=150
    center=true;

    define(`digraph',`subgraph')
    include(main.dot)
    include(TreatmentTime.dot)
    include(TreatmentSaline.dot)
    include(TreatmentVitals.dot)
    include(TreatmentPressures.dot)
    include(TreatmentUltrafiltration.dot)
    include(TreatmentParameters.dot)
    include(TreatmentParameters-BloodFlow.dot)
    include(TreatmentParameters-DialysateFlow.dot)
    include(TreatmentParameters-DialysateTemp.dot)
    include(TreatmentParameters-DialysateCond.dot)
}