\[
\begin{array}{|c|}
\hline
\begin{array}{c}
\textbf{Date:} \text{(Insert Date)} \\[0.4cm]
\textbf{Subject:} \text{Invitation to Workshop on Drug Free Pain Management and Reversal} \\[0.4cm]
\text{Dear Members,} \\[0.2cm]
\text{On the occasion of World Health Day, we are pleased to invite you} \\
\text{to a workshop on \textbf{Drug Free Pain Management and Reversal}.} \\[0.2cm]
\hline
\textbf{Details of the Workshop:} \\
\textbf{Date:} \text{(Insert Date)} \\
\textbf{Time:} \text{(Insert Time)} \\
\textbf{Venue:} \text{Civil Medical Hall, Sheesh Nagar} \\[0.4cm]
\text{We request all members to attend punctually and participate actively} \\
\text{in this important session. Your presence will greatly enrich the discussions.} \\[0.4cm]
\textbf{Yours sincerely,} \\[0.2cm]
\textbf{Secretary} \\
\text{Civil Medical Doctors Association} \\
\end{array} \\
\hline
\end{array}
\]