Protocatechualdehyde Synergizes with Aspirin at the Platelet Cyclooxygenase-1 Level - Sun, Shiqing; Hao, Haiping; Gong, Ping; Tang, Zhiyuan; Li, Feiyan; Chen, Xiaohu; Shi, Haibo; Wang, Guangji (Planta Medica, 2011)