participant "Patient Registry" as PR

control "Match-Connect" as MC

control "Search & Match\nService" as SM

participant "Donor Registry" as DR

skinparam SequenceMessageAlign center

skinparam dpi 92

== Register Patient ==

PR -> SM : Create Patient

activate SM #FFBBBB

SM -> PR : Return WMDA Patient ID

deactivate SM

== Modify Patient ==

PR -> SM : Update Patient

PR -> SM : Assign User To Patient

== Retrieve Patient(s) ==

PR -> SM : Retrieve Patients

activate SM #FFBBBB

SM -> PR : Return One or More Patients

deactivate SM

== Making Requests ==

PR -[#dodgerblue]> DR : <color #dodgerblue> Request a Donor (patient embedded) </color>

PR -[#dodgerblue]> DR : <color #dodgerblue> Update Registered Patient </color>