Analysis of information sources in references of the Wikipedia article "氯吡格雷" in Chinese language version.
|PMC=缺少标题 (帮助). 2013-09-17, 347: f5307. PMC 3775704 |title=为空 (帮助)|PMC=缺少标题 (帮助). 2013-09-17, 347: f5307. PMC 3775704 |title=为空 (帮助)|title=为空 (帮助)