全文获取类型
收费全文 | 23197篇 |
免费 | 1170篇 |
国内免费 | 257篇 |
专业分类
耳鼻咽喉 | 253篇 |
儿科学 | 485篇 |
妇产科学 | 671篇 |
基础医学 | 2633篇 |
口腔科学 | 529篇 |
临床医学 | 1708篇 |
内科学 | 6228篇 |
皮肤病学 | 415篇 |
神经病学 | 2486篇 |
特种医学 | 897篇 |
外科学 | 3700篇 |
综合类 | 51篇 |
一般理论 | 4篇 |
预防医学 | 918篇 |
眼科学 | 285篇 |
药学 | 1361篇 |
中国医学 | 49篇 |
肿瘤学 | 1951篇 |
出版年
2024年 | 40篇 |
2023年 | 188篇 |
2022年 | 401篇 |
2021年 | 717篇 |
2020年 | 447篇 |
2019年 | 527篇 |
2018年 | 697篇 |
2017年 | 560篇 |
2016年 | 644篇 |
2015年 | 720篇 |
2014年 | 934篇 |
2013年 | 1132篇 |
2012年 | 1775篇 |
2011年 | 1805篇 |
2010年 | 1018篇 |
2009年 | 999篇 |
2008年 | 1632篇 |
2007年 | 1617篇 |
2006年 | 1460篇 |
2005年 | 1394篇 |
2004年 | 1362篇 |
2003年 | 1220篇 |
2002年 | 1080篇 |
2001年 | 160篇 |
2000年 | 127篇 |
1999年 | 169篇 |
1998年 | 188篇 |
1997年 | 169篇 |
1996年 | 172篇 |
1995年 | 127篇 |
1994年 | 86篇 |
1993年 | 96篇 |
1992年 | 96篇 |
1991年 | 72篇 |
1990年 | 71篇 |
1989年 | 82篇 |
1988年 | 53篇 |
1987年 | 70篇 |
1986年 | 52篇 |
1985年 | 42篇 |
1984年 | 58篇 |
1983年 | 51篇 |
1982年 | 36篇 |
1981年 | 41篇 |
1980年 | 42篇 |
1979年 | 20篇 |
1978年 | 15篇 |
1977年 | 23篇 |
1976年 | 15篇 |
1974年 | 14篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
Lucy E. Hudsmith MA MRCP Sara A. Thorne MD FRCP Paul F. Clift MD MRCP Joseph De Giovanni MD FRCP 《Congenital heart disease》2009,4(1):42-45
Two adult patients with isolated, aortic interruption were successfully treated by percutaneous insertion of graft stents. Prior to the intervention, both patients were hypertensive and on medication. In both cases, an ascending aortogram demonstrated a blind ending of the thoracic aorta distal to the left subclavian artery with a large gradient across the interruption and with multiple collaterals. A graft stent was successfully deployed across the interrupted segment in both cases. We believe that this is one of the first reported cases of percutaneous stenting of aortic interruption and represents a promising new therapeutic option for these adult patients. 相似文献
994.
Chiara Gardella MD Paolo Tomà MD Oliviero Sacco MD Donata Girosi MD Serena Panigada MD Elena Battistini MD Girolamo Mattioli MD Vincenzo Jasonni MD Giovanni A. Rossi MD 《Pediatric pulmonology》2009,44(3):244-248
Three girls, 5‐, 9‐, and 15‐year‐old, were evaluated for recurrent airway infections and pneumonia. Chest X‐rays, which included the upper portion of the abdomen, showed marked gaseous bowels distention, while computed tomography scans of the chest demonstrated the presence of tracheoesophageal fistula (TEF), confirmed by fiberoptic bronchoscopy. Abdominal gaseous distension, a known possible clinical manifestation of TEF in the neonatal period generated by airflow through the fistula into the oesophagus, has not been reported as a clue to the diagnosis in older children. When detected in patients with recurrent respiratory infection, should raise the suspicion of unrecognized TEF. Pediatr Pulmonol. 2009; 44:244–248. © 2009 Wiley‐Liss, Inc. 相似文献
995.
Marco Frattini Enrico Vaienti Giovanni Soncini Francesco Pogliacomi 《Musculoskeletal surgery》2009,93(3):109-114
Tibial plateau fractures are complex injuries which, if not adequately treated, can lead to invalidating sequelae. They constitute on average about 1% of all fractures, and up to 8% in patients over 65 years, and can be caused by both high- and low-energy trauma. Unlike in younger subjects, treatment of tibial plateau fractures in the elderly is not univocal and depends on the patient’s functional needs, bone quality and systemic comorbidities. In this retrospective study, 49 patients with a mean age of 72 years, who underwent surgical treatment of a tibial plateau fracture, were assessed by the Rasmussen’s clinical and radiological grading systems. Clinical and radiographic outcomes were satisfactory in 75.5 and 59.1% of cases, respectively. Data were also analyzed, in terms of fracture type, age and gender, to detect any statistically significant correlation between these parameters and clinical and radiographic outcomes. 相似文献
996.
Matteo Piga Alessandra Vacca Alberto Cauli Giovanni Porru Alessandro Mathieu 《Joint, bone, spine : revue du rhumatisme》2009,76(2):205-208
We report an Italian family suffering from chilblain. Seven members over three generations affected, two of them presenting association with late contractural arachnodactyly. Inflammatory cutaneous lesions following exposure to cold or drop in temperature are called chilblain. Arachnodactyly is an hallmark of hereditary connective tissue disorders such as Marfan's syndrome and Beals' syndrome. The latter, showing joint congenital contractures, is called indeed congenital contractural arachnodactyly. We speculate that an underlying alteration in connective tissue could lead to the association between chilblain lesions and contractural arachnodactyly. 相似文献
997.
998.
999.
1000.
Pires Viana Giovanni Pires Viana Giovanni Andr�� 《Indian Journal of Plastic Surgery》2009,42(1):58-62
One of the first signs of facial ageing appears in the forehead, with the descent of the lateral part of the brow. This is a troubling condition for all patients and elevation of the lateral part of the brow becomes a more and more frequent demand. The authors present their experience in 350 consecutive cases of direct eyebrow lift (“butterfly wing” incision) alone or in combination with rhytidectomy and/or blepharoplasty. The majority of the patients were female (90%). The age ranged from 43 to 85 years. Eighty per cent of the cases were performed simultaneously with rhytidectomy and blepharoplasty, 16% were performed in association with blepharoplasty and eyebrow lift alone represented 4%. The most common complication was epidermal cyst (3.4%) and suture dehiscence (2%). The “butterfly wing” incision provides a useful alternative to correction of eyebrow ptosis. Indication for surgery is dependent more on the ageing signs than on the patient''s chronological age. The final results are consistently very gratifying to the patient and to the plastic surgeon alike. 相似文献