Iowa Code § 681.11: Claims contested.

1. Any person interested may appear within three months after such report is filed and contest the claim or demand of any creditor by written exceptions thereto filed with the clerk, who shall forthwith cause notice thereof to be given to the creditor, which shall be served as in case of an original notice.

2. The action shall be accorded reasonable priority for assignment to assure its prompt disposition. The court may order a trial by jury but if it does not, it shall hear the proofs and allegations of the parties in the case and render such judgment thereon as shall be just.