全文获取类型
收费全文 | 6893篇 |
免费 | 400篇 |
国内免费 | 25篇 |
专业分类
耳鼻咽喉 | 111篇 |
儿科学 | 229篇 |
妇产科学 | 168篇 |
基础医学 | 724篇 |
口腔科学 | 136篇 |
临床医学 | 666篇 |
内科学 | 1514篇 |
皮肤病学 | 118篇 |
神经病学 | 618篇 |
特种医学 | 182篇 |
外科学 | 1108篇 |
综合类 | 144篇 |
一般理论 | 3篇 |
预防医学 | 572篇 |
眼科学 | 155篇 |
药学 | 476篇 |
中国医学 | 13篇 |
肿瘤学 | 381篇 |
出版年
2023年 | 37篇 |
2022年 | 79篇 |
2021年 | 196篇 |
2020年 | 130篇 |
2019年 | 179篇 |
2018年 | 199篇 |
2017年 | 133篇 |
2016年 | 153篇 |
2015年 | 192篇 |
2014年 | 242篇 |
2013年 | 310篇 |
2012年 | 488篇 |
2011年 | 509篇 |
2010年 | 293篇 |
2009年 | 251篇 |
2008年 | 395篇 |
2007年 | 417篇 |
2006年 | 355篇 |
2005年 | 365篇 |
2004年 | 313篇 |
2003年 | 306篇 |
2002年 | 263篇 |
2001年 | 117篇 |
2000年 | 116篇 |
1999年 | 101篇 |
1998年 | 55篇 |
1997年 | 34篇 |
1996年 | 32篇 |
1995年 | 33篇 |
1994年 | 27篇 |
1993年 | 32篇 |
1992年 | 75篇 |
1991年 | 66篇 |
1990年 | 55篇 |
1989年 | 61篇 |
1988年 | 57篇 |
1987年 | 60篇 |
1986年 | 55篇 |
1985年 | 53篇 |
1984年 | 37篇 |
1983年 | 38篇 |
1982年 | 19篇 |
1981年 | 23篇 |
1980年 | 20篇 |
1979年 | 29篇 |
1978年 | 19篇 |
1976年 | 20篇 |
1975年 | 21篇 |
1974年 | 22篇 |
1972年 | 21篇 |
排序方式: 共有7318条查询结果,搜索用时 31 毫秒
1.
Byrne Emma Abel Stephen Yu Alexander Shepard Matthew Karlovits Stephen M. Wegner Rodney E. 《Journal of neuro-oncology》2022,157(1):197-205
Journal of Neuro-Oncology - Adjuvant radiation is often used in patients with low grade gliomas with high-risk characteristics with a recommended dose of 45–54 Gy. We used the... 相似文献
2.
3.
4.
Susanne G Warner Adnan A Alseidi Johnny Hong Timothy M Pawlik Rebecca M Minter 《HPB : the official journal of the International Hepato Pancreato Biliary Association》2015,17(9):785-790
BackgroundHepatopancreatobiliary (HPB) surgery fellowship training has multiple paths. Prospective trainees and employers must understand the differences between training pathways. This study examines self-reported fellowship experiences and current scope of practice across three pathways.MethodsAn online survey was disseminated to 654 surgeons. These included active Americas Hepato-Pancreato-Biliary Association (AHPBA) members and recent graduates of HPB, transplant–HPB and HPB–heavy surgical oncology fellowships.ResultsA total of 416 (64%) surgeons responded. Most respondents were male (89%) and most were practising in an academic setting (83%). 290 (70%) respondents underwent formal fellowship training. Although fellowship experiences varied, current practice was largely similar. Minimally invasive surgery (MIS) and ultrasound were the most commonly identified areas of training deficiencies and were, respectively, cited as such by 47% and 34% of HPB-, 49% and 50% of transplant-, and 52% and 25% of surgical oncology-trained respondents. Non-HPB cases performed in current practice included gastrointestinal (GI) and general surgery cases (56% and 49%, respectively) for HPB-trained respondents, transplant and general surgery cases (87% and 21%, respectively) for transplant-trained respondents, and GI surgery and non-HPB surgical oncology cases (70% and 28%, respectively) for surgical oncology-trained respondents.ConclusionsFellowship training in HPB surgery varies by training pathway. Training in MIS and ultrasound is deficient in each pathway. The ultimate scope of non-transplant HPB practice appears similar across training pathways. Thus, training pathway choice is best guided by the training experience desired and non-HPB components of anticipated practice. 相似文献
5.
6.
M T Hegel G G Abel M Etscheidt S Cohen-Cole C I Wilmer 《Journal of behavior therapy and experimental psychiatry》1989,20(1):31-39
The hyperventilation syndrome is present in as many as 50% of patients with non-cardiac chest pain. This study evaluated a behavioral treatment of this disorder in three adult females. They had long histories of chest pain and were documented to be free of coronary artery disease. Each subject met the DSM-III-R diagnostic criteria for an anxiety disorder. Following treatment, all subjects showed a marked decrease in the frequency and intensity of chest pain episodes and in the frequency of shortness of breath episodes. Two subjects maintained their progress at one-year follow-up. The results lend support to the efficacy of controlled breathing and relaxation training for the treatment of hyperventilation-related chest pain and to the inclusion of a hyperventilation provocation test in the diagnosis of the syndrome as well as its role in changing cognitions regarding cardiac status. Also discussed is the rationale for treating hyperventilation related chest pain in a medical care setting. 相似文献
7.
8.
9.
10.
Heidi Goerler Petra Oppelt Ulrich Abel Axel Haverich 《European journal of cardio-thoracic surgery》2007,32(4):560-566
OBJECTIVE: Fibrin sealant is widely used in almost all fields of surgery and has proved to be an effective therapeutic tool in cardiothoracic surgery. Nevertheless, there have been concerns about early bypass graft occlusion associated with the use of fibrin glue. This analysis has been performed to assess the risks and benefits of Tissucol Duo S in coronary artery bypass grafting (CABG) surgery. METHODS: Two thousand one hundred forty-nine patients were included in this retrospective study, 879 (40.9%) were intra-operatively treated with Tissucol Duo S fibrin glue, 1270 (59.1%) did not receive fibrin glue (control group). Patient characteristics were documented according to the EuroScore. Intra- and postoperative data were collected. Primary endpoint of this study was the 30-day all-cause mortality rate in the Tissucol Duo S treated group compared to the control group. RESULTS: Mean age was 66.6+/-9.4 years, 76.3% of the patients were male. There was an increased 30-day-mortality rate in the Tissucol Duo S group compared to the control group (8.5 vs 3.5%, p<0.001). In order to determine if and to what extent the apparent fibrin effect might be due to confounding effects from covariates, an adjustment for potential confounding was done. However, multivariable adjustment did not reduce the risk of fibrin glue below an odds ratio of 2.2. CONCLUSION: Although the apparent increase in mortality risk associated with the use of fibrin glue could not be eliminated statistically, we consider Tissucol Duo S fibrin glue a safe and effective therapeutic tool in CABG surgery when it is applied correctly. Due to the retrospective character of this study some detailed information about the indication for the use of fibrin glue and its application is missing which may be important cofactors for mortality. For further clarification a prospective randomized study may be useful. 相似文献