查看“Testpage”的源代码

[math]
\begin{array}{cc}
& \text{Sibling} \\
\text{Patient} &
\begin{array}{c|c|c}
\hline & \text{No tonsillectomy} & \text{Tonsillectomy} \\
\hline\text{No tonsillectomy} & 37 & 7 \\
\hline\text{Tonsillectomy} & 15 & 26
\end{array}
\end{array}
[/math]