Versions of Iowa Code 455B.142 - Burden of proof on LawServer 2024 Iowa Code 455B.142 – Burden of proof 2023 Iowa Code 455B.142 – Burden of proof 2022 Iowa Code 455B.142 – Burden of proof 2020 Iowa Code 455B.142 – Burden of proof 2018 Iowa Code 455B.142 – Burden of proof 2016 Iowa Code 455B.142 – Burden of proof 2014 Iowa Code 455B.142 – Burden of proof. 2009 Iowa Code 455B.142 – Burden of proof