As of last year the Hong Kong Companies Register identifies the directors of Adistem Ltd as Bill Paspaliaris and James Thornton. The company has a single shareholder - GL Holdings Inc. B.V. located in the tax haven of Netherlands Antilles.
Bill Paspaliaris seems to also be known as Vasilis Paspaliaris. His Linked In profile indicates he was a director of Adistem from the period of July 2006 to Oct 2012.
The Medivet Company Overview document from the Medivet web site lists Vasilis Paspaliaris as being part of Medivet - http://medivet.net.au/pdf/CompanyOverview.pdf
This document was created in 2009 so it may be out of date now. However it would seem he was a key person during Medivet's formation and worked closely with both companies at that time.
So as well as Adistem Ltd holding a 2.5% equity stake in Medivet Pty Ltd (as disclosed in the MLA EM) it would seem the other direct link between the two companies is or was Vasilis Paspaliaris.
MLA Price at posting:
14.0¢ Sentiment: LT Buy Disclosure: Held