Abstract
Hellton, KH; Roislien, J
Hellton, KH (reprint author), Univ Oslo, Matemat Inst, Stat, Oslo, Norway.; Hellton, KH (reprint author), Norsk Regnesentral, Oslo, Norway.
TIDSSKRIFT FOR DEN NORSKE LAEGEFORENING, 2017; 137 (12-13): 897