月亮臉 Consult: Signs and symptoms . Wolters Kluwer Health/Lippincott Williams & Wilkins. 2008: 364 [2015-06-12]. ISBN 9781582557038. Moon Facies: Causes and Treatment
子宫内膜息肉BBC Health. [2007-10-21]. (原始内容存档于2010-01-13). Uterine bleeding – Signs and Symptoms . UCSF Medical Center. 2007-05-08 [2007-10-20]. (原始内容存档于2008-04-11)
胸膜炎ISBN 9781451151947. (原始内容存档于3 November 2016) (英语). What Are the Signs and Symptoms of Pleurisy and Other Pleural Disorders. NHLBI. 21 September 2011 [1 November
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陰莖分泌物126. Penile Discharge. Signs and Symptoms . Lippincott Williams & Wilkins. 2008. ISBN 978-0-7817-7043-9 (英语). Urethritis and Urethral Discharge in Men