While performing the “balancing of interests test” in the examination of cases concerning limitations on the institution of paternity claims, the Court has taken a number of factors into consideration. […] The yardstick against which the above factors are measured is whether a legal presumption has been allowed to prevail over biological and social reality and if so whether, in the circumstances, this is compatible, having regard to the margin of appreciation left to the State, with the obligation to secure effective “respect” for private and family life, taking into account the established facts and the wishes of those concerned (see Kroon and Others v. the Netherlands, cited above, § 40).