全文获取类型
| 收费全文 | 3272篇 |
| 免费 | 341篇 |
| 国内免费 | 9篇 |
专业分类
| 耳鼻咽喉 | 48篇 |
| 儿科学 | 162篇 |
| 妇产科学 | 77篇 |
| 基础医学 | 427篇 |
| 口腔科学 | 74篇 |
| 临床医学 | 404篇 |
| 内科学 | 618篇 |
| 皮肤病学 | 65篇 |
| 神经病学 | 370篇 |
| 特种医学 | 133篇 |
| 外科学 | 438篇 |
| 综合类 | 32篇 |
| 一般理论 | 6篇 |
| 预防医学 | 370篇 |
| 眼科学 | 49篇 |
| 药学 | 179篇 |
| 1篇 | |
| 中国医学 | 1篇 |
| 肿瘤学 | 168篇 |
出版年
| 2023年 | 75篇 |
| 2022年 | 34篇 |
| 2021年 | 198篇 |
| 2020年 | 123篇 |
| 2019年 | 178篇 |
| 2018年 | 209篇 |
| 2017年 | 138篇 |
| 2016年 | 130篇 |
| 2015年 | 116篇 |
| 2014年 | 164篇 |
| 2013年 | 195篇 |
| 2012年 | 272篇 |
| 2011年 | 251篇 |
| 2010年 | 108篇 |
| 2009年 | 96篇 |
| 2008年 | 149篇 |
| 2007年 | 155篇 |
| 2006年 | 107篇 |
| 2005年 | 95篇 |
| 2004年 | 91篇 |
| 2003年 | 85篇 |
| 2002年 | 68篇 |
| 2001年 | 54篇 |
| 2000年 | 38篇 |
| 1999年 | 52篇 |
| 1998年 | 12篇 |
| 1997年 | 21篇 |
| 1996年 | 12篇 |
| 1995年 | 24篇 |
| 1994年 | 16篇 |
| 1993年 | 6篇 |
| 1992年 | 34篇 |
| 1991年 | 27篇 |
| 1990年 | 22篇 |
| 1989年 | 29篇 |
| 1988年 | 24篇 |
| 1987年 | 29篇 |
| 1986年 | 19篇 |
| 1985年 | 18篇 |
| 1984年 | 11篇 |
| 1983年 | 9篇 |
| 1982年 | 14篇 |
| 1981年 | 12篇 |
| 1980年 | 8篇 |
| 1979年 | 14篇 |
| 1978年 | 10篇 |
| 1977年 | 10篇 |
| 1974年 | 6篇 |
| 1971年 | 14篇 |
| 1967年 | 9篇 |
排序方式： 共有3622条查询结果，搜索用时 187 毫秒
1.
2.
3.
4.
5.
6.
Archives of Women's Mental Health - The experience of motherhood is most often emotionally positive and rewarding, but for many new mothers suffering from postpartum depression (PPD), this is... 相似文献
7.
Maryam Boumezrag Sormeh Harounzadeh Hamza Ijaz Angeline Johny Lorna Richards Yan Ma Maxine A. Le Saux Paige Kulie Caitlin Davis Andrew C. Meltzer 《The American journal of emergency medicine》2019,37(2):304-307
Study objectives
The primary objective of this study was to compare Emergency Department patients with first-time versus recurrent acute pancreatitis.Methods
This study was a retrospective chart review of patients with a diagnosis of acute pancreatitis who presented to a single academic urban emergency department from 2012 to 2016. Criteria for inclusion were clinical symptoms of pancreatitis, age greater than or equal to 18?years, ED diagnosis of acute pancreatitis, and an abdominal CT scan within 24?h of triage. Exclusion criteria were traumatic mechanism and pregnancy. Charts were reviewed by a minimum of two trained abstractors using structured data collection sheets and discrepancies were resolved by a third abstractor. Patients with first time acute pancreatitis versus recurrent acute pancreatitis were compared to determine differences in characteristics, management and disposition.Results
250 patients were included in the study. Of these, 165 patients had first-time acute pancreatitis and 85 patients had recurrent acute pancreatitis. Demographics, vital signs and initial lab values were the same in both groups. Patients with recurrent acute pancreatitis were more likely to have significant findings on CT (Modified CT Severity Index, 2.09 versus 1.43, p?<?0.05), more likely to require IV opiates (96% versus 75%, p?<?0.001) and less likely to need ICU admission (8% versus 19%, p?=?0.03).Conclusion
ED patients with recurrent acute pancreatitis demonstrated more significant findings on CT compared to patients with first-time acute pancreatitis but were less likely to require ICU admission. 相似文献8.
Caitlin A. Schonewolf Marina Heskel Abigail Doucette Sunil Singhal Melissa A. Frick Eric P. Xanthopoulos Michael N. Corradetti Joseph S. Friedberg Taine T. Pechet John P. Christodouleas William Levin Abigail Berman Keith A. Cengel Vivek Verma Stephen M. Hahn John C. Kucharczuk Ramesh Rengan Charles B. Simone 《Clinical lung cancer》2019,20(1):e63-e71
Background
Stereotactic body radiation therapy (SBRT) is standard for medically inoperable stage I non–small-cell lung cancer (NSCLC) and is emerging as a surgical alternative in operable patients. However, limited long-term outcomes data exist, particularly according to operability. We hypothesized long-term local control (LC) and cancer-specific survival (CSS) would not differ by fractionation schedule, tumor size or location, or operability status, but overall survival (OS) would be higher for operable patients.Patients and Methods
All consecutive patients with stage I (cT1-2aN0M0) NSCLC treated with SBRT from June 2009 to July 2013 were assessed. Thoracic surgeon evaluation determined operability. Local failure was defined as growth following initial tumor shrinkage or progression on consecutive scans. LC, CSS, and OS were calculated using Cox proportional hazards regression.Results
A total of 186 patients (204 lesions) were analyzed. Most patients were inoperable (82%) with Eastern Cooperative Oncology Group performance status of 1 (59%) or 2 (26%). All lesions received biological effective doses ≥ 100 Gy most commonly (94%) in 3 to 5 fractions. The median follow-up was 4.0 years. LC at 2 and 5 years were 95.6% (95% confidence interval, 92%-99%) and 93.7% (95% confidence interval, 90%-98%), respectively. Compared with operable patients, inoperable patients did not have significant differences in 5-year LC (93.1% vs. 96.7%; P = .49), nodal failure (31.4% vs. 11.0%; P = .12), distant failure (12.2% vs. 10.4%; P = .98), or CSS (80.6% vs. 91.0%; P = .45) but trended towards worse OS (34.2% vs. 45.3%; P = .068). Tumor size, location, and fractionation did not significantly influence outcomes.Conclusions
SBRT has excellent, durable LC and CSS rates for early-stage NSCLC, although inoperable patients had somewhat lower OS than operable patients, likely owing to greater comorbidities. 相似文献9.
Gibson Caitlin M. Hall Courtney Davis Sondra Schillig Jessica M. 《Journal of thrombosis and thrombolysis》2021,52(2):577-583
Journal of Thrombosis and Thrombolysis - Standard fixed-dose enoxaparin dosing regimens may not provide adequate prophylaxis against venous thromboembolism among obese hospitalized patients. While... 相似文献
10.
