Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “_Group_” was here.
The first occurrence of ID “_Group_2” was here.
The first occurrence of ID “_Group_3” was here.
The first occurrence of ID “_Group_4” was here.
The first occurrence of ID “_Group_5” was here.
The first occurrence of ID “_Group_6” was here.
The first occurrence of ID “_Group_7” was here.
The first occurrence of ID “_Group_8” was here.
The first occurrence of ID “_Path_” was here.
The “type” attribute for the “style” element is not needed and should be omitted.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “_Group_”.
Duplicate ID “_Group_2”.
Duplicate ID “_Group_3”.
Duplicate ID “_Group_4”.
Duplicate ID “_Group_5”.
Duplicate ID “_Group_6”.
Duplicate ID “_Group_7”.
Duplicate ID “_Group_8”.
Duplicate ID “_Path_”.
Bad value “/-/media/Images/RSNA/News articles/2019/February/future-of-thoracic-featured” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/-/media/Images/RSNA/News articles/2019/February/Just-Culture-Feature” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/-/media/Images/RSNA/News articles/2019/February/chest800x500” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/-/media/Images/RSNA/News articles/2019/February/MicrobubbleAHCC-feature.ashx” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
The element “button” must not appear as a descendant of the “a” element.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
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