全文获取类型
收费全文 | 124798篇 |
免费 | 9391篇 |
国内免费 | 3155篇 |
专业分类
耳鼻咽喉 | 1245篇 |
儿科学 | 7271篇 |
妇产科学 | 4240篇 |
基础医学 | 14488篇 |
口腔科学 | 1575篇 |
临床医学 | 13386篇 |
内科学 | 21174篇 |
皮肤病学 | 2381篇 |
神经病学 | 10552篇 |
特种医学 | 2809篇 |
外国民族医学 | 4篇 |
外科学 | 11427篇 |
综合类 | 17566篇 |
现状与发展 | 16篇 |
预防医学 | 7426篇 |
眼科学 | 2235篇 |
药学 | 6414篇 |
54篇 | |
中国医学 | 11091篇 |
肿瘤学 | 1990篇 |
出版年
2024年 | 366篇 |
2023年 | 2188篇 |
2022年 | 4531篇 |
2021年 | 5968篇 |
2020年 | 5455篇 |
2019年 | 4299篇 |
2018年 | 4355篇 |
2017年 | 4463篇 |
2016年 | 4598篇 |
2015年 | 4381篇 |
2014年 | 8522篇 |
2013年 | 8820篇 |
2012年 | 6940篇 |
2011年 | 8101篇 |
2010年 | 6287篇 |
2009年 | 6089篇 |
2008年 | 5932篇 |
2007年 | 6091篇 |
2006年 | 5505篇 |
2005年 | 4572篇 |
2004年 | 3884篇 |
2003年 | 3455篇 |
2002年 | 2407篇 |
2001年 | 2170篇 |
2000年 | 1893篇 |
1999年 | 1754篇 |
1998年 | 1438篇 |
1997年 | 1338篇 |
1996年 | 1302篇 |
1995年 | 1281篇 |
1994年 | 1071篇 |
1993年 | 955篇 |
1992年 | 863篇 |
1991年 | 672篇 |
1990年 | 627篇 |
1989年 | 517篇 |
1988年 | 511篇 |
1987年 | 453篇 |
1986年 | 396篇 |
1985年 | 517篇 |
1984年 | 431篇 |
1983年 | 280篇 |
1982年 | 355篇 |
1981年 | 321篇 |
1980年 | 256篇 |
1979年 | 220篇 |
1978年 | 138篇 |
1977年 | 102篇 |
1976年 | 89篇 |
1975年 | 44篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
Bernard–Soulier syndrome (BSS) is a rare autosomal recessively inherited bleeding disorder. Pregnancy in patients with BSS is characterized by ante‐, intra‐, or postpartum haemorrhage, which may be delayed and severe. There is no consensus in the management of BSS in pregnancy and so far only 16 pregnancies in nine patients have been described. We report a further three pregnancies in two women with the syndrome. We also outline our management of pregnant patients with BSS. 相似文献
72.
Juliette A. Loncaster MD FRCR Ernest Allan 《Photodiagnosis and Photodynamic Therapy》2006,3(2):134-137
Gorlin syndrome (naevoid basal cell carcinoma syndrome) is a genetically linked disorder characterized by the development of multiple basal cell carcinomas (BCCs) throughout life. Cumulative surgery, cryotherapy and other conventional interventions can result in significant disfigurement by middle age. Radiotherapy is contra-indicated because the mutated gene underlying the syndrome, ‘PTCH’, increases sensitivity to ionising radiation, so there is significant likelihood of inducing further tumours in and around the irradiated area. Photodynamic therapy offers a non-invasive treatment option for patients with this condition, with the added advantage of causing minimal scarring. 相似文献
73.
H. Wessling C. L. Simosono M. Escosa-Bagé P. de las Heras-Echeverría 《Acta neurochirurgica》2006,148(6):673-675
Summary We present a case of blindness and Anton’s syndrome in a psychiatric patient with late diagnosis of a giant frontal meningioma.
The criteria for advanced diagnostic imaging in the psychiatric population are discussed. We conclude that MR or CT scan is
indicated in psychiatric in-patients who fail to improve with standard psychiatric treatment. This strategy should be submitted
to a cost-benefit analysis. 相似文献
74.
Abstract Guillain-Barré syndrome (GBS) is a disease of the peripheral nervous system, which is caused by aberrant immune responses
directed against some components of peripheral nerves. GBS is rarely accompanied by cardiovascular involvement. We describe
a case of acute neuropathy complicated by sudden heart failure and left ventricular dysfunction which had a presumably neurogenic
origin. Pathogenesis of acute heart failure is probably due to transitorial stunned myocardium and neurogenic cardiac injury.
We show a rare case of transitorial and acute cardiac dysfunction by echocardiography and laboratory markers of heart failure. 相似文献
75.
Petra Schwingenschuh Karoline Wenzel Petra Katschnig Ronald Saurugg Erwin Ott 《Movement disorders》2007,22(5):742-745
We describe a case of a palatal tic resembling palatal tremor (PT) in a young female patient with a previously unrecognized mild Tourette syndrome. At the time of her visit, the patient complained about ear clicks that were audible to others. We discuss the differential diagnoses of hyperkinetic palatal movements emphasizing the ongoing discussion about essential PT representing a more heterogeneous disorder than previously thought. 相似文献
76.
77.
Manuel Steiner Andishe Attarbaschi Margit K nig Helmut Gadner Oskar A. Haas Georg Mann 《Pediatric hematology and oncology》2004,22(1):11-16
Constitutional trisomy 21 is the most prominent predisposing factor to childhood leukemia, whereas the t(12;21)(p13;q22) with its molecular genetic counterpart, the TEL/AML1 fusion gene, is the most common acquired chromosomal rearrangement in childhood B-cell precursor (BCP) acute lymphoblastic leukemia (ALL). Thus, it was somewhat surprising that according to the currently available literature the incidence of TEL/AML1+ BCP ALL is extremely low in patients with Down syndrome (DS). To further investigate this issue in a population-based fashion, the authors retrospectively assessed the number of DS patients with a TEL/AML1+ ALL in two consecutive Austrian ALL multicenter trials. Accordingly, they were able to analyze 8 of 10 individuals with DS and a BCP ALL, including 2 who suffered from a TEL/AML1+ leukemia. Based on this observation we concluded that individuals with a constitutional trisomy 21 may have the similar likelihood to develop a TEL/AML1+ leukemia as BCP ALL patients without this specific predisposing factor. 相似文献
78.
M Ugras† G Kocak† H Ozcan‡ 《Journal of the European Academy of Dermatology and Venereology》2006,20(9):1126-1128
Neu-Laxova syndrome (NLS) is a rare autosomal recessive syndrome, characterized by severe intrauterine growth retardation (IUGR), microcephaly, abnormal brain development, oedema and ichthyosis. It was first reported in 1971 by Neu et al. (Pediatrics 47: 610-612) and since then no more than 60 cases have been reported. A newborn girl delivered from a 29-year-old healthy mother was admitted to hospital with a thick membrane covering her body and dismorphic appearance. The diagnosis of NLS was made according to characteristic features. The syndrome is known to have a poor prognosis and the baby lived for 9 weeks. This case is one of the longest living cases of NLS and the fourth case reported from Turkey. 相似文献
79.
董频 《山东医大基础医学院学报》2006,(4)
目的:运用软硬腭前移的手术方法扩大鼻咽下口,改善因鼻咽部狭小致阻塞性睡眠呼吸暂停综合征患者的呼吸暂停症状。方法:手术切除硬腭后份使其缩短、悬雍垂软腭成形并将软腭拉向前,扩大鼻咽下口。结果:患者术后自觉症状及客观评价疗效满意。结论:软硬腭前移鼻咽下口扩大显著改善鼻咽下口狭小导致的阻塞性睡眠呼吸暂停患者的症状。 相似文献
80.
We report on 4 children who experienced a syncopal episode while being treated with guanfacine without any other evident cause. Syncope appears to be an uncommon side effect of guanfacine and is probably due to drug-induced hypotension or bradycardia. 相似文献