For the trial of the crimes against humanity mentioned in Subtitle I of Title I of Book II of the Criminal Code, the crime of enforced disappearance mentioned in Article 221-12 of the same code, the crimes of torture or acts of barbarism mentioned in Articles 222-1 to 222-6 of the said code, the war crimes mentioned in Chapter I of Book IV bis of the same code and the crimes mentioned in Article 706-73 of this Code, the court, without the assistance of the jury, may, by a judgment delivered in open court, order that a witness be heard in camera for the duration of the hearing if the witness’s public testimony is likely to seriously endanger his or her life or physical integrity or those of his or her relatives.