Mehls O, Tönshoff B, Blum W F, Heinrich U, Seidel C
Department of Paediatrics, University Children's Hospital, Heidelberg, Federal Republic of Germany.
Acta Paediatr Scand Suppl. 1990;370:28-34; discussion 35. doi: 10.1111/j.1651-2227.1990.tb11666.x.