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 work.（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, e.g. DNA, RNA, AIDS, CT, etc.;
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 title.
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 disease
2) 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 leukemia
3) 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 cases
2) 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 imaging
3) 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
4) 解释性用词时，如：一例系统性红斑狼疮出现胰腺炎病例报告及文献综述Original: A case report of SLE appearing pancreatitis and review of literatures（说明：appear为不及物动词，不能跟宾语；literature一般为不可数名词)Revised: Pancreatitis in systemic lupus erythematosus (SLE): A case report and review of the literature