全文获取类型
收费全文 | 1085篇 |
免费 | 102篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 69篇 |
妇产科学 | 6篇 |
基础医学 | 124篇 |
口腔科学 | 31篇 |
临床医学 | 83篇 |
内科学 | 171篇 |
皮肤病学 | 20篇 |
神经病学 | 297篇 |
特种医学 | 134篇 |
外科学 | 112篇 |
综合类 | 44篇 |
预防医学 | 29篇 |
眼科学 | 29篇 |
药学 | 18篇 |
肿瘤学 | 25篇 |
出版年
2023年 | 8篇 |
2022年 | 8篇 |
2021年 | 13篇 |
2020年 | 16篇 |
2019年 | 17篇 |
2018年 | 29篇 |
2017年 | 23篇 |
2016年 | 40篇 |
2015年 | 34篇 |
2014年 | 38篇 |
2013年 | 51篇 |
2012年 | 36篇 |
2011年 | 40篇 |
2010年 | 54篇 |
2009年 | 58篇 |
2008年 | 36篇 |
2007年 | 45篇 |
2006年 | 30篇 |
2005年 | 32篇 |
2004年 | 18篇 |
2003年 | 19篇 |
2002年 | 12篇 |
2001年 | 17篇 |
2000年 | 13篇 |
1999年 | 18篇 |
1998年 | 43篇 |
1997年 | 47篇 |
1996年 | 44篇 |
1995年 | 37篇 |
1994年 | 23篇 |
1993年 | 31篇 |
1992年 | 15篇 |
1991年 | 14篇 |
1990年 | 15篇 |
1989年 | 26篇 |
1988年 | 20篇 |
1987年 | 20篇 |
1986年 | 17篇 |
1985年 | 18篇 |
1984年 | 13篇 |
1983年 | 21篇 |
1982年 | 7篇 |
1981年 | 15篇 |
1980年 | 9篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 10篇 |
1976年 | 9篇 |
1926年 | 2篇 |
1904年 | 2篇 |
排序方式: 共有1195条查询结果,搜索用时 31 毫秒
51.
由于治疗方法的进步,近80%的儿童和青少年癌症患者能够长期生存。在美国,约有270000例儿童癌症的幸存者,即每640名20至39岁成年人中就有一名幸存者。大量的幸存者有利于儿童癌症治疗后长期健康结果的研究。现在可以明确的是,化疗和放疗所致的儿童各器官系统损害在临床上可能潜伏多年。为了全面了解治疗儿童癌症而继发的健康问题,重要的是衡量三项长期结果:健康状况、死亡率和患病率。这三项中,关于前两项已有相当好的研究报道。在一项对20227例癌症5年生存者的回顾性分析中,Mertens等发现以下原因导致的超额死亡率具有统计学意义:继发癌症(… 相似文献
52.
Albert C. Ludolph MD Johannes Dorst MD Jens Dreyhaupt PhD Jochen H. Weishaupt MD Jan Kassubek MD Ulrike Weiland MD Thomas Meyer MD Susanne Petri MD Andreas Hermann MD PhD Alexander Emmer MD Julian Grosskreutz MD Torsten Grehl MD Daniel Zeller MD Matthias Boentert MD Bertold Schrank MD Johannes Prudlo MD Andrea S. Winkler MD Stanislav Gorbulev PhD Francesco Roselli MD PhD Joachim Schuster PhD Luc Dupuis PhD for the LIPCAL-ALS Study Group 《Annals of neurology》2020,87(2):206-216
53.
目的探讨高脂血症性急性胰腺炎(HAP)和非高脂血症性急性胰腺炎的特点及临床救治效果。方法回顾分析我院在2013年1月至2013年12月收治的99例急性胰腺炎的临床资料,根据患者有无高脂血症将其分为HAP组(高脂血症患者)和对照组(无高脂血症的AP患者);患者均接受标准化临床治疗,比较2组患者病情、血浆生化指标、治疗转归、住院时间与费用、复发等情况。结果 HAP组重度胰腺炎比例(13.6%)明显高于对照组(7.8%),HAP组血糖和尿酸均显著高于对照组,其中HAP组血糖平均值达到对照组的171%,而HAP组的血淀粉酶却仅为对照组的44.5%;HAP组1年内的复发率(13.6%)显著高对于照组(2.6%),P0.01差异有统计学意义。结论高血脂对急性胰腺炎的病情、表现和治疗结果均有明显影响,应引起高度重视。 相似文献
54.
Hajer El Oussini Hanna Bayer Jelena Scekic-Zahirovic Pauline Vercruysse Jérôme Sinniger Sylvie Dirrig-Grosch Stéphane Dieterlé Andoni Echaniz-Laguna Yves Larmet Kathrin Müller Jochen H. Weishaupt Dietmar R. Thal Wouter van Rheenen Kristel van Eijk Roland Lawson Laurent Monassier Luc Maroteaux Anne Roumier Philip C. Wong Leonard H. van den Berg Albert C. Ludolph Jan H. Veldink Anke Witting Luc Dupuis 《Acta neuropathologica》2016,131(3):465-480
55.
56.
I. Uttner S. Weber W. Freund D. Bengel B. Schmitz A. C. Ludolph R. Huber 《European journal of neurology》2011,18(6):882-887
Background: Hippocampal sulcal cavities (HSC) have been speculated to contribute to a higher vulnerability of memory pathways and might be a possible etiological factor in transient global amnesia (TGA). Therefore, we evaluated the influence of HSC on cognitive long‐term outcome in TGA‐patients. Methods: Fourteen otherwise healthy patients with the clinical syndrome of TGA in their history underwent a high‐resolution magnetic resolution imaging and a comprehensive neuropsychological test battery. The neuropsychological control group consisted of 15 healthy subjects and was balanced for age, sex and other risk factors as well as intellectual and social status. Results: Magnetic resolution imaging and neuropsychological testing have been performed 1128 days (median) after the TGA. HSC have been detected in nine of the 14 patients and have been bilateral in eight of them. There were no differences in cognitive performance in patients with and without HSC as well as compared to healthy subjects. Even in patients with greater lesion load, only a slight visuospatial deficit was found. Conclusions: Although an increased incidence of HSCs is detected in TGA patients, cavities are not obligatorily in TGA. Moreover, even patients with hippocampal cavities achieve a full neuropsychological recovery independent of the frequency and size of the hippocampal lesions. 相似文献
57.
AC Winter K Berger JE Buring & T Kurth 《Cephalalgia : an international journal of headache》2009,29(2):269-278
We evaluated the association of body mass index (BMI) with migraine and migraine specifics in a cross-sectional study of 63 467 women aged ≥ 45 years, of whom 12 613 (19.9%) reported any history of migraine and 9195 had active migraine. Compared with women without migraine and a BMI < 23 kg/m2 , women with a BMI ≥ 35 kg/m2 had adjusted odds ratios (ORs) (95% confidence intervals) of 1.03 (0.95, 1.12) for any history of migraine. Findings were similar for active migraineurs. Women with a BMI of ≥ 35 kg/m2 had increased risk for low and high migraine frequency, with the highest estimate for women who reported daily migraine. Compared with women with the lowest associated risk (migraine frequency < 6 times/year; BMI between 27.0 and 29.9 kg/m2 ), women with a BMI ≥ 35 kg/m2 had an OR of daily migraine of 3.11 (1.12, 8.67). Among the women with active migraine, a BMI ≥ 35 kg/m2 was associated with increased risk of phonophobia and photophobia and decreased risk of a unilateral pain characteristic and migraine aura. Our data confirm previous findings that the association between BMI with migraine is limited to migraine frequency and specific migraine features. 相似文献
58.
59.
60.
Malessa Rabe Ansgar Felbecker Stefan Waibel Peter Steinbach Pia Winter Albert C. Ludolph 《Journal of neurology》2010,257(8):1298-1302
We screened 217 patients from Germany (n = 213), Austria (n = 2) and Switzerland (n = 2) with a positive family history for amyotrophic lateral sclerosis (ALS) for mutations in the copper/zinc superoxide dismutase
(SOD1) gene. We found that 13% of the families tested carried mutations. By analyzing inheritance, we detected a clear-cut
co-segregation in 5 of the 28 families; however, in two families with an established mutation, co-segregation was absent.
In Germany, the R115G mutation is comparatively frequent and exhibits a specific aggressive phenotype. The L144F mutation,
which is the most prevalent mutation in the Balkan countries, and the D90A mutation which is the most frequent SOD1 mutation
globally, seem to be the second most common disease-causing mutations in Germany. 相似文献