Author's response to reviews Title: High blood pressure prevalence and associated factors in a North African adolescent population. A national cross-sectional study in Tunisia Authors: Hajer Aounallah-Skhiri ( hajer.skhiri@rns.tn) Jalila El-Ati ( jalila.elati@yahoo.fr) Pierre Traissac ( pierre.traissac@ird.fr) Habiba Ben-Romdhane ( habiba.benromdhane@rns.tn) Sabrina Eymard-Duvernay ( Sabrina.Eymard-duvernay@ird.fr) Francis Delpeuch ( francis.delpeuch@ird.fr) Noureddine Achour ( noureddine.achour@rns.tn) Bernard Maire ( bernard.maire@ird.fr) Version: 2 Date: 31 October 2011 Author's response to reviews: see over