child-cpt.php

		<?php
			$args = array(
			    'post_type'      => 'patient-education',
			    'posts_per_page' => 4,
			    'post_parent'    => $post->ID,
			    'orderby' => 'title',
			    'order' => 'ASC',
			 );

			$related = new WP_Query( $args );
			if ( $related->have_posts() ) : ?>

				<h2>Related articles</h2>

    		<?php while ( $related->have_posts() ) : $related->the_post(); ?>

        	<div id="parent-<?php the_ID(); ?>" class="parent-page">

            <h1><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h1>

            <p><?php the_excerpt(); ?></p>

        	</div>

    		<?php endwhile; ?>

			<?php endif; wp_reset_postdata(); ?>