Each PROFESSIONAL STAFF GROUP EPISODE

K	must be related to one and only one PATIENT
K	must be related to one and only one PROFESSIONAL STAFF GROUP SERVICE
	must be provided within one and only one SERVICE
	may be related to one or more DISABLEMENT APPLIANCE
	may be related to one or more PROFESSIONAL STAFF GROUP CONTACT
	may be classified from source of referral by one and only one TREATMENT FUNCTION