Hos nogle fostre med nedsat kropsvægt var der nedsat ossifikation af frontale og parietale knogler (hos 4 ud af 151 fostre), hvilket almindeligvis betragtes som reversibelt, og antistof relateret effekt kunne ikke udelukkes.
In some fetuses with decreased body weights there were decreases in ossification of frontal and parietal bones (4 out of 151 fetuses), which is generally considered to be reversible, and antibody related effects could not be ruled out.