author：yangguang reading：0 brief：<p>Because after a sleep, the lung secretions will begin to deposit. When the body position changes,

author：yangguang reading：0 brief：<p>In the morning, expectoration may first be due to chronic pharyngitis. It may occur when you get

author：yangguang reading：0 brief：<p>The clinical manifestation of expectoration every morning does not exclude chronic obstructive pu

author：yangguang reading：0 brief：<p>In the morning, when there is cough and expectoration, it is mainly due to chronic pharyngitis or

author：yangguang reading：0 brief：<div class="article-content" style="margin: 0px; padding: 0px; outline: none; -webkit-tap-highlight-