数据类型	全文笔数	总笔数
article (期刊论文)	9956	10037
back cover	1	1
book (专书或专书章节)	1	16
book chapter	7	9
book section	52	92
brief communication	2	2
brief report	1	1
brief reports	2	2
brief research report	1	1
case report	18	19
cohort profile	2	2
comment	10	10
comment & response	1	1
commentary	8	8
communication	7	7
conference paper	189	208
correction	120	123
correspondence	11	11
cover	2	3
editorial	10	10
editorial material	38	38
editorialcomment	1	1
erratum	1	1
forum	2	2
invited editorial	1	1
letter	199	200
meeting abstract	1043	1382
news item	1	1
note	2	2
observational study	2	2
original research	2	2
original study	1	1
patent (专利)	0	276
perspectives	4	4
proceeding papers	1	1
proceedings paper	1	1
progress report	1	1
protocol	1	1
protocols	1	1
reply	1	1
report (未出版研究或工作报告)	7	7
research highlight	1	1
review	422	427
short communication	7	7
short report	1	1
short survey	1	1
technical report	1	1