1．标题Titles are to be written to be understood by those in your field， telling them exactly what you have done in your （告诉你的同行确切研究了什么）要求：1） Short and concise（简明扼要）：Write in one line (not a sentence); not containing an active verb; not exceeding 25 words or 120-140 letters and spaces; no abbreviations or chemical symbols except those that are generally accepted， DNA， RNA， AIDS， CT， ;2） Informative（信息丰富）：State exactly what you want the reader to know about your paper and your work; 3） Indexing（便于索引）：Pack as many key words or indexing terms as possible into the title without overloading it; key words not in the title will be in the abstract or can go in the “Key Words” section of the paper; key words are usually in the beginning or ending place of the 示例：（请根据上述原则说明以下标题的修改的理由）1） 视网膜小血管变化是冠状动脉疾病的一个指标Original: Retinal arteriolar changes are an indicator of coronary artery diseaseRevised: Retinal arteriolar changes as an indicator of coronary artery disease2) 用大剂量氨甲喋呤治疗急性淋巴细胞白血病的初步体会Original: Preliminary experience in using high dose of methotrexate to treat ALLRevised: High dose methotrexate therapy in acute lymphocytic leukemia3) 关于饮食中钾含量与血压关系的研究Original: A study of the relationship between the content of potassium in diet and blood pressureRevised: Dietary potassium and blood pressure 为了满足标题写作的上述，有时对较长标题可采用副标题（subtitle）处理，如出现：1) 病例数时，如：对急症室连续170例腹痛病例的回顾性研究Original: A retrospective study on 170 consecutive cases of abdominal pain in the emergency roomRevised: Abdominal pain in the emergency room: Retrospective study of 170 consecutive cases2) 研究性质/方法时，如：用磁共振成象术对正常怀孕期间垂体增大进行活体内研究Original: Use MRI to conduct an in vivo study on the enlargement of the pituitary gland during normal pregnancyRevised: Pituitary gland growth during normal pregnancy: An in vivo study using magnetic resonance imaging3) 并列结构时，如：军队卫生防疫工作中出现的问题、原因与对策的初探Original: A preliminary study on the problems， causes and countermeasures in health and epidemic prevention work of CPLARevised: Military health and epidemic prevention: Problems， causes and countermeasures
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