Facts which have caused the exclusion of testimony may still be shown for the purpose of lessening the credibility of the testimony. [C51, §2389; R60, §3979; C73, §3637; C97, §4602; C24, 27, 31, 35, 39, § 11255; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §622.2 ] 2019 Acts, ch 59, §202