White v Sylvania Lighting Australasia PL  NSWWCCPD 7. Roche DP.
In  "There is an aggravation of a disease if it is made more grave or more serious in its effects upon the patient: Federal Broom Co PL v Semlitch  HCA, (1964) 110 CLR 626.
* Piets/wcms/aggravation >>
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