If , however , the applicant and the holder(s ) of previous authorizations for the same product do not reach agreement on sharing the information , the Member States may take national measures to oblige the applicant and the holder(s ) of previous authorizations established within their territories to share the information , in order to avoid repeating toxicological tests on vertebrates undertaken on their territory and may lay down conditions for the use of the information while ensuring a reasonable balance between the interests of the parties concerned .