(c) interviews with the child victim are carried out, where necessary, by or through professionals trained for that purpose;
(d) the same persons, if possible and where appropriate, conduct all the interviews with the child victim;
(e) the number of interviews is as limited as possible and interviews are carried out only where strictly necessary for the purposes of criminal investigations and proceedings;
(f) the child victim may be accompanied by a representative or, where appropriate, an adult of the child’s choice, unless a reasoned decision has been made to the contrary in respect of that person.
4. Member States shall take the necessary measures to ensure that in criminal investigations of any of the offences referred to in Articles 2 and 3 all interviews with a child victim or, where appropriate, with a child witness, may be video recorded and that such video recorded interviews may be used as evidence in criminal court proceedings, in accordance with the rules under their national law.
5. Member States shall take the necessary measures to ensure that in criminal court proceedings relating to any of the offences referred to in Articles 2 and 3, it may be ordered that:
(a) the hearing take place without the presence of the public; and
(b) the child victim be heard in the courtroom without being present, in particular, through the use of appropriate communication technologies.
6. This Article shall apply without prejudice to Article 12.