全文获取类型
收费全文 | 2549篇 |
免费 | 114篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 39篇 |
儿科学 | 102篇 |
妇产科学 | 31篇 |
基础医学 | 234篇 |
口腔科学 | 38篇 |
临床医学 | 174篇 |
内科学 | 543篇 |
皮肤病学 | 56篇 |
神经病学 | 117篇 |
特种医学 | 74篇 |
外科学 | 499篇 |
综合类 | 66篇 |
预防医学 | 121篇 |
眼科学 | 204篇 |
药学 | 181篇 |
中国医学 | 8篇 |
肿瘤学 | 183篇 |
出版年
2023年 | 15篇 |
2022年 | 53篇 |
2021年 | 123篇 |
2020年 | 59篇 |
2019年 | 73篇 |
2018年 | 93篇 |
2017年 | 64篇 |
2016年 | 79篇 |
2015年 | 71篇 |
2014年 | 118篇 |
2013年 | 140篇 |
2012年 | 223篇 |
2011年 | 198篇 |
2010年 | 132篇 |
2009年 | 112篇 |
2008年 | 172篇 |
2007年 | 166篇 |
2006年 | 138篇 |
2005年 | 114篇 |
2004年 | 104篇 |
2003年 | 94篇 |
2002年 | 101篇 |
2001年 | 38篇 |
2000年 | 15篇 |
1999年 | 29篇 |
1998年 | 15篇 |
1997年 | 9篇 |
1996年 | 14篇 |
1995年 | 11篇 |
1994年 | 7篇 |
1993年 | 4篇 |
1992年 | 13篇 |
1991年 | 5篇 |
1990年 | 10篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 8篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1979年 | 3篇 |
1976年 | 2篇 |
1972年 | 2篇 |
1967年 | 2篇 |
1966年 | 5篇 |
1965年 | 1篇 |
1964年 | 2篇 |
1963年 | 2篇 |
1961年 | 2篇 |
1922年 | 1篇 |
1918年 | 1篇 |
排序方式: 共有2670条查询结果,搜索用时 11 毫秒
101.
Moreira Daniel C. Venkataraman Sujatha Subramanian Apurva Desisto John Balakrishnan Ilango Prince Eric Pierce Angela Griesinger Andrea Green Adam Eberhardt Charles G. Foreman Nicholas K. Vibhakar Rajeev 《Journal of neuro-oncology》2020,147(3):531-545
Journal of Neuro-Oncology - MYC-driven medulloblastomas are highly aggressive childhood tumors with dismal outcomes and a lack of new treatment paradigms. We identified that targeting replication... 相似文献
102.
An eleven-year-old clinically dysmorphic and devel-opmentally retarded male child presenting with com-plaints of 5 episodes of recurrent cholestatic jaundice since 3 years of age was evaluated. Imaging revealed features consistent with congenital extrahepatic porto-caval shunt(Abernethy type 1b), multiple regenerative liver nodules and intrahepatic biliary radical dilatation. The presence of ductal paucity and trisomy 8 were con-firmed on liver biopsy and karyotyping. The explanation for unusual and previously unreported features in the present case has been proposed. 相似文献
103.
Dayal R Bernheim J Clair DG Mousa AY Hollenbeck S DeRubertis B McKinsey J Morrissey NJ Kent KC Faries PL 《Annals of vascular surgery》2005,19(2):235-240
Critical deep venous thrombosis and occlusion constitutes a small percentage of patients with venous disease, who exhibit severe symptomatology. This study examined the results of multimodal percutaneous therapy for the treatment of complex critical venous thrombotic and occlusive disease. Twenty-five patients presented with critical venous thromboses or occlusions (11 with debilitating unilateral lower extremity edema causing ambulatory impairment, 2 with debilitating bilateral lower extremity edema, 3 with phlegmasia cerulea dolens, 2 with venous claudication, 2 with superior vena cava (SVS) syndrome with respiratory compromise, 4 with debilitating upper extremity edema, and 1 with renal insufficiency). Therapeutic modalities including thrombolysis, mechanical thrombectomy, percutaneous venoplasty and stent placement, temporary inferior vena cava filtration, and ultrasound guidance were used in all cases in conjunction with long-term systemic anticoagulation. The venous access site was determined by the anatomic location of the lesion and included popliteal, femoral, brachial, and lesser saphenous. Patients were followed with clinical exam and duplex surveillance. Resolution of symptoms was achieved in 18 of 25 patients (72%) and partial resolution occurred in 4 of 25 (16%). Failure of treatment identified as both lack of clinical response and evidence of continued venous thrombosis occurred 3 of 25 patients (12%). Restoration of arterial pulses and limb salvage was achieved in the three patients with phlegmasia cerulea dolens and acute limb-threatening ischemia. Both patients with SVC syndrome experienced resolution of respiratory compromise and facial edema. The mean length of follow-up was 11 ± 2.7 months. Complications included transfusion requirement (2), hematuria (2), retroperitoneal hematoma (1), and cellulitis (1). Acute critical venous thrombotic and occlusive disease is responsive to multimodal percutaneous treatment. The relief of pain and resolution of acutely life and limb-threatening conditions in this most severely symptomatic subset of patients represents the immediate goal of treatment.Presented at the Twenty-ninth Annual Meeting of the Peripheral Vascular Surgery Society, Anaheim, CA, June 4-5, 2004. 相似文献
104.
Adrian M. Dubuc Marc Remke Andrey Korshunov Paul A. Northcott Shing H. Zhan Maria Mendez-Lago Marcel Kool David T. W. Jones Alexander Unterberger A. Sorana Morrissy David Shih John Peacock Vijay Ramaswamy Adi Rolider Xin Wang Hendrik Witt Thomas Hielscher Cynthia Hawkins Rajeev Vibhakar Sidney Croul James T. Rutka William A. Weiss Steven J. M. Jones Charles G. Eberhart Marco A. Marra Stefan M. Pfister Michael D. Taylor 《Acta neuropathologica》2013,125(3):373-384
105.
106.
Rajeev Gupta MD Manuel Villa MD Emanuel Agaba MD Garry Ritter PA MHA Cristina Sison Corrado P. Marini MD Rafael Barrera MD 《JPEN. Journal of parenteral and enteral nutrition》2013,37(3):368-374
Background: The incidence of obesity is rising, and an increasing number of obese patients are admitted to surgical intensive care units (SICUs). However, it is not clear whether obesity is an independent risk factor for increased morbidity and mortality in SICU patients. We examined the effect of obesity on morbidity and mortality in patients admitted to the SICU in this study. Method: We reviewed prospectively acquired SICU data in normal and obese patients with an SICU length of stay >24 hours. Comparability of the groups was assessed using a χ2 test or Fisher exact test, as appropriate, for categorical variables and analysis of variance (ANOVA) or the Kruskal‐Wallis test, as appropriate, for continuous variables. Results: Of the 1792 consecutive patients evaluated, 711 had a normal body mass index (BMI), and 993 were either preobese or obese. There was no statistically significant difference across the 5 BMI groups with respect to any of the 3 comorbidity indices (Acute Physiology and Chronic Health Evaluation III [APACHE III], Simplified Acute Physiology Score, or Multiple Organ Dysfunction Score). There was no statistically significant difference in the intensive care unit (ICU) length of stay and hospital length of stay or time‐to‐ICU mortality (log‐rank test P = .054) among the 5 BMI groups. A Cox regression analysis and backward elimination algorithm selected APACHE III to be the most important explanatory variable for survival time. Conclusion: Obesity does not affect the mortality of patients admitted to the SICU. We conclude that obesity cannot be used as an independent predictive mortality outcome variable in patients admitted to the SICU. 相似文献
107.
108.
109.
110.
Kristin Fay Rajeev Mannem Keith Baynes Dhruv Sarin Melissa DuBois 《Emergency radiology》2016,23(1):93-96
Avulsion injuries of the knee are common sequelae of significant trauma given the number of ligamentous and tendinous insertions around the joint. Commonly discussed avulsion fractures of the lateral knee include the Segond fracture of the lateral tibial plateau and the arcuate complex avulsion fracture of the fibular styloid process. A less common avulsion fracture is the iliotibial (IT) band avulsion fracture involving the anterolateral corner of the tibia (Gerdy’s tubercle). It is crucial to identify IT band avulsion fractures because of the frequent associated internal derangements of the knee. This case report describes the imaging of an acute IT band avulsion fracture and compares these findings with other lateral knee avulsion fractures. 相似文献