Also, Advisory Board or Advisory Committee. See the links in the reference comment by Barbara Carrara.

For an example from an international philosophy journal, see:
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1468-03...

Also see Nikki Scott-Despaigne's link in the discussion section for an example from sociology.

Per the note in my other answer ("peer review"), there is some overlap between the terms "comité scientifique" and "comité de lecture." Some journals have both, some do not. For example:
http://anthropologiesante.revues.org/717
http://www.mnhn.fr/assoc/hasri/sitefr2/comite.html

To further complicate matters, peer review does not require a that a journal have a "comité scientifique" or Advisory Panel, but only a "comité éditorial" or Editorial Board plus either individual referees or a "comité de lecture." See:
http://www.elsevier.com/wps/find/reviewershome.reviewers/pee...
https://fr.wikipedia.org/wiki/Revue_scientifique#Comit.C3.A9...

So in terms of "scientific method" properly speaking, the role of the Advisory Panel or "comité scientifique" - insofar as it is not a "comité de lecture" or a list of individual referees or reviewers - is not completely clear. That would explain why peer-reviewed journals do not always have them.

Be that as it may, many journals do have Advisory Panels, Boards or Committees in addition to Editors and referees or reviewers, so that seems the best translation to me.