全文获取类型
收费全文 | 874篇 |
免费 | 37篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 53篇 |
妇产科学 | 12篇 |
基础医学 | 77篇 |
口腔科学 | 11篇 |
临床医学 | 85篇 |
内科学 | 106篇 |
皮肤病学 | 9篇 |
神经病学 | 81篇 |
特种医学 | 165篇 |
外科学 | 88篇 |
综合类 | 79篇 |
预防医学 | 40篇 |
眼科学 | 31篇 |
药学 | 58篇 |
中国医学 | 1篇 |
肿瘤学 | 35篇 |
出版年
2021年 | 7篇 |
2020年 | 8篇 |
2019年 | 8篇 |
2018年 | 10篇 |
2017年 | 12篇 |
2016年 | 11篇 |
2015年 | 23篇 |
2014年 | 23篇 |
2013年 | 30篇 |
2012年 | 33篇 |
2011年 | 24篇 |
2010年 | 20篇 |
2009年 | 19篇 |
2008年 | 27篇 |
2007年 | 33篇 |
2006年 | 50篇 |
2005年 | 22篇 |
2004年 | 27篇 |
2003年 | 17篇 |
2002年 | 17篇 |
2001年 | 29篇 |
2000年 | 20篇 |
1999年 | 18篇 |
1998年 | 36篇 |
1997年 | 27篇 |
1996年 | 29篇 |
1995年 | 26篇 |
1994年 | 26篇 |
1993年 | 33篇 |
1992年 | 18篇 |
1991年 | 12篇 |
1990年 | 21篇 |
1989年 | 19篇 |
1988年 | 11篇 |
1987年 | 14篇 |
1986年 | 28篇 |
1985年 | 13篇 |
1984年 | 17篇 |
1983年 | 11篇 |
1982年 | 12篇 |
1981年 | 15篇 |
1980年 | 16篇 |
1979年 | 5篇 |
1978年 | 10篇 |
1977年 | 8篇 |
1976年 | 7篇 |
1974年 | 3篇 |
1971年 | 3篇 |
1970年 | 3篇 |
1966年 | 5篇 |
排序方式: 共有933条查询结果,搜索用时 15 毫秒
81.
Doreen M. Olvet PhD Lauren Delaparte MA Fang-Cheng Yeh MD PhD Christine DeLorenzo PhD Patrick J. McGrath MD Myrna M. Weissman PhD Phillip Adams PhD Maurizio Fava MD Thilo Deckersbach PhD Melvin G. McInnis MD Thomas J. Carmody PhD Crystal M. Cooper PhD Benji T. Kurian MD Hanzhang Lu PhD Marisa S. Toups MD Madhukar H. Trivedi MD Ramin V. Parsey MD PhD 《Depression and anxiety》2016,33(1):56-65
82.
83.
Inflammatory bowel disease and the X chromosome 总被引:1,自引:0,他引:1
Hayward PA; Satsangi J; Jewell DP 《QJM : monthly journal of the Association of Physicians》1996,89(9):713-718
A review of documented cases demonstrates a significant association of
Turner's syndrome with Crohn's disease and ulcerative colitis; this
association relates particularly to genetic constitutions comprising an
abnormal rather than an absent X chromosome. The karyotype 46XiXq, in pure
or mosaic form, appears to be a significant susceptibility factor for
inflammatory bowel disease. This karyotype often gives rise to relatively
weak phenotypic characteristics of Turner's syndrome, which may be
overlooked in short females with inflammatory bowel disease. The
association of inflammatory bowel disease with Turner's syndrome may
reflect the presence on the X chromosome of genes involved in disease
pathogenesis. Linkage analysis studies, involving microsatellite markers on
the X chromosome, are being performed.
相似文献
84.
Little DM; Farrell JG; Cunningham PM; Hickey DP 《QJM : monthly journal of the Association of Physicians》1997,90(10):641-642
Systemic donor infection is regarded as being an absolute contraindication
to cadaveric organ donation for transplantation. This is largely due to
fear of transmitting pathogenic organisms to the immunosuppressed
recipient. However, due to the current shortage of organs available for
transplantation, clinicians are faced with the option of using organs from
'non-ideal' donors, such as those patients with documented evidence of
infection. We report the successful outcome of six orthotopic liver
transplants, 11 renal transplants, one combined heart lung transplant and
one simultaneous kidney and pancreas transplant with organs from eight
donors in whom bacterial meningitis (n = 7) and acute bacterial
epiglottitis (n = 1) were the antecedent causes of death.
相似文献
85.
Angiomyolipomas of the liver in tuberous sclerosis 总被引:5,自引:0,他引:5
Although the association of tuberous sclerosis and renal angiomyolipomas is well established, the occurrence of hepatic hamartomatous lesions in this disease is less well documented. We describe two cases of tuberous sclerosis with associated multiple intrahepatic angiomyolipomas, and we review the literature on this subject. Radiologically, angiomyolipomas can range from entirely lipomatous to completely solid, features which are present in our cases. A characteristic finding of the hepatic involvement in this disease appears to be the multiplicity of the lesions. We suggest that in the setting of tuberous sclerosis it is reasonable to assume that intrahepatic lesions represent angiomyolipomas. However, in nontuberous sclerosis patients with similar findings malignancy cannot be excluded.An invited commentary on this article follows on pp. 552–553. 相似文献
86.
87.
E Sherwood Brown Prabha Sunderajan Lisa T Hu Sharon M Sowell Thomas J Carmody 《Neuropsychopharmacology》2012,37(11):2347-2354
Bipolar disorder is associated with very high rates of substance dependence. Cocaine use is particularly common. However, limited data are available on the treatment of this population. A 10-week, randomized, double-blind, placebo-controlled trial of lamotrigine was conducted in 120 outpatients with bipolar disorder, depressed or mixed mood state, and cocaine dependence. Other substance use was not exclusionary. Cocaine use was quantified weekly by urine drug screens and participant report using the timeline follow-back method. Mood was assessed with the Hamilton rating scale for depression, quick inventory of depressive symptomatology self-report, and young mania rating scale. Cocaine craving was assessed with the cocaine-craving questionnaire. Data were analyzed using a random regression analysis that used all available data from participants with at least one postbaseline assessment (n=112). Lamotrigine and placebo groups were similar demographically (age 45.1±7.3 vs 43.5±10.0 years, 41.8% vs 38.6% women). Urine drug screens (primary outcome measure) and mood symptoms were not significantly different between groups. However, dollars spent on cocaine showed a significant initial (baseline to week 1, p=0.01) and by-week (weeks 1–10, p=0.05) decrease in dollars spent on cocaine, favoring lamotrigine. Few positive trials of medications for cocaine use, other than stimulant replacement, have been reported, and none have been reported for bipolar disorder. Reduction in amount of cocaine use by self-report with lamotrigine suggests that a standard treatment for bipolar disorder may reduce cocaine use. A study limitation was weekly assessment of urine drug screens that decreased the ability to detect between-group differences. 相似文献
88.
Warden D Subramaniam GA Carmody T Woody GE Minhajuddin A Poole SA Potter J Fishman M Bogenschutz M Patkar A Trivedi MH 《Addictive behaviors》2012,37(9):1046-1053
Background
In opioid dependent youth there is substantial attrition from medication-assisted treatment. If youth at risk for attrition can be identified at treatment entry or early in treatment, they can be targeted for interventions to help retain them in treatment.Methods
Opioid dependent adolescents and young adults (n = 152), aged 15–21, were randomized to 12 weeks (BUP, n = 74) or 2 weeks of detoxification (DETOX, n = 78) with buprenorphine/naloxone (Bup/Nal), both in combination with 12 weeks of psychosocial treatment. Baseline and early treatment related predictors of treatment attrition were identified in each group using bivariate and multivariate logistic regression.Results
In the DETOX group 36% left between weeks 2 and 4, at the end of the dose taper, while in the BUP group only 8% left by week 4. In the BUP group, early adherence to Bup/Nal, early opioid negative urines, use of any medications in the month prior to treatment entry, and lifetime non-heroin opioid use were associated with retention while prior 30-day hallucinogen use was associated with attrition. In the DETOX group, only use of sleep medications was associated with retention although not an independent predictor. A broad range of other pre-treatment characteristics was unrelated to attrition.Conclusions
Prompt attention to those with early non-adherence to medication or an early opioid positive urine, markers available in the first 2 weeks of treatment, may improve treatment retention. Extended Bup/Nal treatment appeared effective in improving treatment retention for youth with opioid dependence across a wide range of demographics, and pre-treatment clinical characteristics. 相似文献89.
90.