Hanhart syndrome
... that about 30 cases of Hanhart syndrome were reported between 1932 and 1991?
... that about 30 cases of <b id="mwWA"><a href="./Hanhart_syndrome" id="mwWQ" rel="mw:WikiLink" title="Hanhart syndrome">Hanhart syndrome</a></b> were reported between 1932 and 1991?