全文获取类型
| 收费全文 | 1145844篇 |
| 免费 | 82660篇 |
| 国内免费 | 2905篇 |
专业分类
| 耳鼻咽喉 | 15228篇 |
| 儿科学 | 39189篇 |
| 妇产科学 | 32097篇 |
| 基础医学 | 167326篇 |
| 口腔科学 | 33423篇 |
| 临床医学 | 102870篇 |
| 内科学 | 221722篇 |
| 皮肤病学 | 27271篇 |
| 神经病学 | 93959篇 |
| 特种医学 | 43840篇 |
| 外国民族医学 | 305篇 |
| 外科学 | 169028篇 |
| 综合类 | 24347篇 |
| 一般理论 | 441篇 |
| 预防医学 | 87989篇 |
| 眼科学 | 25592篇 |
| 药学 | 82341篇 |
| 3篇 | |
| 中国医学 | 2384篇 |
| 肿瘤学 | 62054篇 |
出版年
| 2021年 | 9631篇 |
| 2019年 | 9891篇 |
| 2018年 | 14723篇 |
| 2017年 | 11438篇 |
| 2016年 | 13211篇 |
| 2015年 | 14257篇 |
| 2014年 | 18756篇 |
| 2013年 | 28843篇 |
| 2012年 | 38200篇 |
| 2011年 | 41064篇 |
| 2010年 | 23961篇 |
| 2009年 | 21418篇 |
| 2008年 | 37967篇 |
| 2007年 | 39916篇 |
| 2006年 | 39815篇 |
| 2005年 | 38098篇 |
| 2004年 | 36759篇 |
| 2003年 | 35414篇 |
| 2002年 | 34128篇 |
| 2001年 | 50738篇 |
| 2000年 | 52816篇 |
| 1999年 | 42979篇 |
| 1998年 | 12444篇 |
| 1997年 | 11145篇 |
| 1996年 | 10992篇 |
| 1995年 | 10437篇 |
| 1994年 | 9725篇 |
| 1993年 | 9070篇 |
| 1992年 | 32814篇 |
| 1991年 | 31948篇 |
| 1990年 | 31477篇 |
| 1989年 | 30349篇 |
| 1988年 | 27567篇 |
| 1987年 | 27780篇 |
| 1986年 | 25803篇 |
| 1985年 | 25146篇 |
| 1984年 | 18917篇 |
| 1983年 | 15969篇 |
| 1982年 | 9791篇 |
| 1979年 | 17238篇 |
| 1978年 | 12578篇 |
| 1977年 | 10720篇 |
| 1976年 | 10110篇 |
| 1975年 | 10528篇 |
| 1974年 | 12645篇 |
| 1973年 | 12121篇 |
| 1972年 | 11105篇 |
| 1971年 | 10359篇 |
| 1970年 | 9596篇 |
| 1969年 | 8915篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
51.
52.
Julia H. Vermylen Gordon J. Wood Elaine R. Cohen Jeffrey H. Barsuk William C. McGaghie Diane B. Wayne 《Journal of pain and symptom management》2019,57(3):682-687
Introduction
Physician communication impacts patient outcomes. However, communication skills, especially around difficult conversations, remain suboptimal, and there is no clear way to determine the validity of entrustment decisions. The aims of this study were to 1) describe the development of a simulation-based mastery learning (SBML) curriculum for breaking bad news (BBN) conversation skills and 2) set a defensible minimum passing standard (MPS) to ensure uniform skill acquisition among learners.Innovation
An SBML BBN curriculum was developed for fourth-year medical students. An assessment tool was created to evaluate the acquisition of skills involved in a BBN conversation. Pilot testing was completed to confirm improvement in skill acquisition and set the MPS.Outcomes
A BBN assessment tool containing a 15-item checklist and six scaled items was developed. Students' checklist performance improved significantly at post-test compared to baseline (mean 65.33%, SD = 12.09% vs mean 88.67%, SD = 9.45%, P < 0.001). Students were also significantly more likely to have at least a score of 4 (on a five-point scale) for the six scaled questions at post-test. The MPS was set at 80%, requiring a score of 12 items on the checklist and at least 4 of 5 for each scaled item. Using the MPS, 30% of students would require additional training after post-testing.Comments
We developed a SBML curriculum with a comprehensive assessment of BBN skills and a defensible competency standard. Future efforts will expand the mastery model to larger cohorts and assess the impact of rigorous education on patient care outcomes. 相似文献53.
Megan L. Robbins Robert C. Wright Ana María López Karen Weihs 《Journal of psychosocial oncology》2019,37(2):160-177
AbstractObjectives: This study examined word use as an indicator of interpersonal positive reframing in daily conversations of couples coping with breast cancer and as a predictor of stress.Design: The Electronically Activated Recorder (EAR) and Linguistic Inquiry and Word Count (LIWC) were used to examine naturally occurring word use conceptually linked to positive reframing (positive emotion, negative emotion, and cognitive processing words).Sample: Fifty-two couples coping with breast cancer.Methods: Couples wore the EAR, a device participants wear, that audio-recorded over one weekend (>16,000 sound files), and completed self-reports of positive reframing (COPE) and stress (Perceived Stress Scale). LIWC, a software program, measured word use.Findings: Both partners’ word use (i.e., positive emotion and cognitive processing words) was associated with their own reported positive reframing, and spouses’ word use was also indicative of patients’ positive reframing. Results also revealed that, in general, words indicating positive reframing predicted lower levels of stress.Conclusions: Findings supported the hypothesis that partners—and particularly spouses of breast cancer patients—may assist each other’s coping by positively reframing the cancer experience and other negative experiences in conversation. 相似文献
54.
55.
56.
Alan. B. Franklin Sarah N. Bevins Jeremy W. Ellis Ryan S. Miller Susan A. Shriner J. Jeffrey Root Daniel P. Walsh Thomas J. Deliberto 《Transboundary and Emerging Diseases》2019,66(2):705-714
Using data on waterfowl band recoveries, we identified spatially explicit hotspots of concentrated waterfowl movement to predict occurrence and spatial spread of a novel influenza A virus (clade 2.3.4.4) introduced from Asia by waterfowl from an initial outbreak in North America in November 2014. In response to the outbreak, the hotspots of waterfowl movement were used to help guide sampling for clade 2.3.4.4 viruses in waterfowl as an early warning for the US poultry industry during the outbreak . After surveillance sampling of waterfowl, we tested whether there was greater detection of clade 2.3.4.4 viruses inside hotspots. We found that hotspots defined using kernel density estimates of waterfowl band recoveries worked well in predicting areas with higher prevalence of the viruses in waterfowl. This approach exemplifies the value of ecological knowledge in predicting risk to agricultural security. 相似文献
57.
M. Iachina P.M. Ljungdalh R.G. Sørensen L. Kaerlev J. Blaakær O. Trosko N. Qvist B.M. Nørgård 《Clinical oncology (Royal College of Radiologists (Great Britain))》2019,31(2):115-123
Aims
To examine the influence of pre-existing psychiatric disorder on the choice of treatment in patients with gynaecological cancer.Materials and methods
The analyses were based on all patients who underwent surgical treatment for endometrial, ovarian or cervical cancer who were registered in the Danish Gynecological Cancer Database in the years 2007–2014 (3059 patients with ovarian cancer, 5100 patients with endometrial cancer and 1150 with cervical cancer). Logistic regression model and Cox regression model, adjusted for relevant confounders, were used to estimate the effect of pre-existing psychiatric disorder on the course of cancer treatment. Our outcomes were (i) presurgical oncological treatment, (ii) macroradical surgery for patients with ovarian cancer, (iii) radiation/chemotherapy within 30 days and 100 days after surgery and (iv) time from surgery to first oncological treatment.Results
In the group of patients with ovarian cancer, more patients with a psychiatric disorder received macroradical surgery versus patients without a psychiatric disorder, corresponding to an adjusted odds ratio of 1.24 (95% confidence interval 0.62–2.41) and the chance for having oncological treatment within 100 days was odds ratio = 1.26 (95% confidence interval 0.77–2.10). As for patients with endometrial cancer, all outcome estimates were close to unity. The adjusted odds ratio for oncological treatment within 30 days after surgery in patients with cervical cancer with a history of psychiatric disorder was 0.20 (95% confidence interval 0.03–1.54).Conclusions
We did not find any significant differences in the treatment of ovarian and endometrial cancer in patients with pre-existing psychiatric diagnoses. When it comes to oncological treatment, we suggest that increased attention should be paid to patients with cervical cancer having a pre-existing psychiatric diagnosis. 相似文献58.
59.
60.
Stress Testing Versus CT Angiography in Patients With Diabetes and Suspected Coronary Artery Disease
Abhinav Sharma Adrian Coles Nishant K. Sekaran Neha J. Pagidipati Michael T. Lu Daniel B. Mark Kerry L. Lee Hussein R. Al-Khalidi Udo Hoffmann Pamela S. Douglas 《Journal of the American College of Cardiology》2019,73(8):893-902