Publishers ask authors to provide statements of organisational affiliation. This is an important transparency measure required by the World Medical Association's Declaration of Helsinki.
There are as yet no international standards for how affiliations should be cited. There are a variety of organisational identifiers such as OrgID, ROR, GRID, and ISNI that will be important in drawing together an organisation's research output.
A suggested form of wording for EMHS and SMHS follows.
What is behind multiple institutional affiliations in academia? - Science and Public Policy - v.49 (3) June 2022, p.382-402
It is common to cite joint affiliations with health service/s and university / research institutes where more than one organisation has supported the research.
Citing an organisational affiliation assists with searching for and reporting on the level of research activity, and also provides recognition of the organisation's level of research support.
Suggested wording for EMHS and SMHS organisational affiliations (insert name of hospital / service as appropriate) - entries may be inverted if that is the format requested by the publisher (eg Royal Perth Hospital, East Metropolitan Health Service, Perth, Western Australia)
East Metropolitan Health Service, Royal Perth Hospital, Perth, Western Australia
East Metropolitan Health Service, Royal Perth Hospital, Emergency Department, Perth, Western Australia
East Metropolitan Health Service, Allied Health. Perth, Western Australia
South Metropolitan Health Service, Fiona Stanley Hospital, Murdoch, Western Australia
South Metropolitan Health Service, Fiona Stanley Hospital, Emergency Department, Murdoch, Western Australia
South Metropolitan Health Service, Allied Health, Murdoch, Western Australia