There's a really lovely member of this forum who lives in Greece, but I haven't seen her around for a bit. This psychologist in Thessaloniki writes about confidentiality and it looks like the same kind of rules I'd expect in my part of the world. (Since my Greek is pretty much limited to "Time is the teacher of humankind" I can't search for Greek-language info...)

Oh, by the way, welcome to PsychCentral!