In a first aspect, the present invention relates to the use of xenon in the preparation of a medicament for providing analgesia in a newborn subject andor a fetal subject. The vertical columns are arranged in pairs with one of the pair of vertical columns disposed a distance outward from the second of the pair. Second interconnections are formed on the semiconductor constructing body and wiring board, and electrically connected to the external connecting electrodes of the semiconductor constructing body.