Police continue to appeal for public assistance in their search for missing woman Elizabeth Marsh, Victoria Police say.
The 39-year-old Wantirna woman was last seen leaving the Maroondah Hospital about 9.30am on Thursday 11 October.
Police and family have serious concerns for her welfare due to a medical condition.
It is also believed Elizabeth has no access to money.
Elizabeth is described as about 165cm tall with a thin build, brown shoulder-length hair and brown eyes.
She is known to frequent libraries in the Doncaster, Ringwood, Croydon, Knox and Ferntree Gully areas.
It is also believed she frequents the Knox Community Garden and Vineyards.
Investigators have released an image of Elizabeth in the hope someone recognises her and can provide information on her current whereabouts.
Anyone who sees Elizabeth or has information on her whereabouts is urged to contact Ringwood Police Station on 9871 3000.