全文获取类型
收费全文 | 78568篇 |
免费 | 5828篇 |
国内免费 | 604篇 |
专业分类
耳鼻咽喉 | 1378篇 |
儿科学 | 1516篇 |
妇产科学 | 1343篇 |
基础医学 | 12535篇 |
口腔科学 | 1513篇 |
临床医学 | 7201篇 |
内科学 | 15195篇 |
皮肤病学 | 2570篇 |
神经病学 | 6569篇 |
特种医学 | 4125篇 |
外科学 | 9877篇 |
综合类 | 828篇 |
现状与发展 | 2篇 |
一般理论 | 36篇 |
预防医学 | 4969篇 |
眼科学 | 1865篇 |
药学 | 6770篇 |
中国医学 | 679篇 |
肿瘤学 | 6029篇 |
出版年
2023年 | 504篇 |
2022年 | 1366篇 |
2021年 | 2299篇 |
2020年 | 1214篇 |
2019年 | 1819篇 |
2018年 | 2071篇 |
2017年 | 1647篇 |
2016年 | 2251篇 |
2015年 | 2994篇 |
2014年 | 3595篇 |
2013年 | 4197篇 |
2012年 | 6184篇 |
2011年 | 5929篇 |
2010年 | 3528篇 |
2009年 | 3034篇 |
2008年 | 4392篇 |
2007年 | 4251篇 |
2006年 | 3875篇 |
2005年 | 3556篇 |
2004年 | 3049篇 |
2003年 | 2688篇 |
2002年 | 2464篇 |
2001年 | 1626篇 |
2000年 | 1499篇 |
1999年 | 1267篇 |
1998年 | 569篇 |
1997年 | 494篇 |
1996年 | 422篇 |
1995年 | 424篇 |
1994年 | 336篇 |
1993年 | 342篇 |
1992年 | 783篇 |
1991年 | 796篇 |
1990年 | 690篇 |
1989年 | 755篇 |
1988年 | 730篇 |
1987年 | 712篇 |
1986年 | 610篇 |
1985年 | 613篇 |
1984年 | 493篇 |
1983年 | 414篇 |
1982年 | 318篇 |
1981年 | 285篇 |
1980年 | 247篇 |
1979年 | 369篇 |
1978年 | 326篇 |
1977年 | 234篇 |
1974年 | 247篇 |
1973年 | 280篇 |
1972年 | 206篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
21.
22.
Su Jeong Seong Jin Pyo Hong Bong-Jin Hahm Hong Jin Jeon Jee Hoon Sohn Jun Young Lee Maeng Je Cho 《Journal of Korean medical science》2015,30(11):1675-1681
While decreasing trend in gender differences in alcohol use disorders was reported in Western countries, the change in Asian countries is unknown. This study aims to explore the shifts in gender difference in alcohol abuse (AA) and dependence (AD) in Korea. We compared the data from two nation-wide community surveys to evaluate gender differences in lifetime AA and AD by Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV). Face-to-face interviews using the Composite International Diagnostic Interview (CIDI) were applied to all subjects in 2001 (n=6,220) and 2011 (n=6,022). Male-to-female ratio of odds was decreased from 6.41 (95% CI, 4.81-8.54) to 4.37 (95% CI, 3.35-5.71) for AA and from 3.75 (95% CI, 2.96-4.75) to 2.40 (95% CI, 1.80-3.19) for AD. Among those aged 18-29, gender gap even became statistically insignificant for AA (OR, 1.59; 95% CI, 0.97-2.63) and AD (OR, 1.18; 95% CI, 0.80-2.41) in 2011. Men generally showed decreased odds for AD (0.55; 95% CI, 0.45-0.67) and women aged 30-39 showed increased odds for AA (2.13; 95% CI 1.18-3.84) in 2011 compared to 2001. Decreased AD in men and increased AA in women seem to contribute to the decrease of gender gap. Increased risk for AA in young women suggests needs for interventions. 相似文献
23.
24.
25.
Fluid role boundaries: exploring the contribution of the advanced nurse practitioner to multi‐professional palliative care
下载免费PDF全文
![点击此处可从《Journal of clinical nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
26.
27.
28.
29.
James I. Geller MD Joseph G. Pressey MD Malcolm A. Smith MD Rachel A. Kudgus PhD Mariana Cajaiba MD Joel M. Reid PhD David Hall PhD Donald A. Barkauskas PhD Stephen D. Voss MD Steve Y. Cho MD Stacey L. Berg MD Jeffrey S. Dome MD PhD Elizabeth Fox MD Brenda J. Weigel MD 《Cancer》2020,126(24):5303-5310
30.
Kyung Won Lee Mi Sook Cho Dayeon Shin 《International journal of food sciences and nutrition》2016,67(2):184-194
Urinary iodine concentrations (UICs) in the US have been reported to be stable since 1988–1994, although those in selected subgroups remained low. We aimed to investigate iodine status among adults (≥20 years) by two different criteria of assessing iodine deficiency in population. Utilizing National Health and Nutrition Examination Surveys 2001–2012, we conducted linear logistic regressions adjusting for covariates. The prevalence of <50?μg/L UIC was higher in women than in men; increased from 11.6% (2001–2004) to 13.2% (2009–2012) at the national level and in young adults, non-Hispanic blacks (NHBs) and non-users of iodine-containing supplements (all, p?<0.05); the adjusted odds ratios (95%CI) in young adults (1.54 [1.11–2.15], p =?0.0007) and NHBs (1.70 [1.15–2.52], p =?0.0078). Median UICs confirm women and NHBs being in borderline iodine status. Recognizing the critical consequence of iodine deficiency particularly in women and NHBs, regular monitoring of iodine status is important for public health in the US. 相似文献