全文获取类型
收费全文 | 17940篇 |
免费 | 1330篇 |
国内免费 | 501篇 |
专业分类
耳鼻咽喉 | 7篇 |
儿科学 | 685篇 |
妇产科学 | 568篇 |
基础医学 | 1143篇 |
口腔科学 | 82篇 |
临床医学 | 1718篇 |
内科学 | 6912篇 |
皮肤病学 | 82篇 |
神经病学 | 436篇 |
特种医学 | 212篇 |
外国民族医学 | 1篇 |
外科学 | 618篇 |
综合类 | 2717篇 |
预防医学 | 1002篇 |
眼科学 | 62篇 |
药学 | 2370篇 |
7篇 | |
中国医学 | 918篇 |
肿瘤学 | 231篇 |
出版年
2023年 | 217篇 |
2022年 | 207篇 |
2021年 | 468篇 |
2020年 | 495篇 |
2019年 | 493篇 |
2018年 | 515篇 |
2017年 | 551篇 |
2016年 | 561篇 |
2015年 | 547篇 |
2014年 | 947篇 |
2013年 | 1486篇 |
2012年 | 1013篇 |
2011年 | 1095篇 |
2010年 | 863篇 |
2009年 | 862篇 |
2008年 | 951篇 |
2007年 | 905篇 |
2006年 | 751篇 |
2005年 | 641篇 |
2004年 | 647篇 |
2003年 | 598篇 |
2002年 | 450篇 |
2001年 | 418篇 |
2000年 | 384篇 |
1999年 | 320篇 |
1998年 | 247篇 |
1997年 | 254篇 |
1996年 | 192篇 |
1995年 | 178篇 |
1994年 | 175篇 |
1993年 | 157篇 |
1992年 | 151篇 |
1991年 | 138篇 |
1990年 | 98篇 |
1989年 | 115篇 |
1988年 | 117篇 |
1987年 | 113篇 |
1986年 | 104篇 |
1985年 | 138篇 |
1984年 | 131篇 |
1983年 | 71篇 |
1982年 | 115篇 |
1981年 | 106篇 |
1980年 | 122篇 |
1979年 | 102篇 |
1978年 | 80篇 |
1977年 | 73篇 |
1976年 | 64篇 |
1973年 | 63篇 |
1970年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
《Value in health》2022,25(7):1235-1252
ObjectivesThe incidence of type 1 diabetes mellitus is increasing every year requiring substantial expenditure on treatment and complications. A systematic review was conducted on the cost-effectiveness of insulin formulations, including ultralong-, long-, or intermediate-acting insulin, and their biosimilar insulin equivalents.MethodsMEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials, HTA, and NHS EED were searched from inception to June 11, 2021. Cost-effectiveness and cost-utility analyses were included if insulin formulations in adults (≥ 16 years) with type 1 diabetes mellitus were evaluated. Two reviewers independently screened titles, abstracts, and full-text articles, extracted study data, and appraised their quality using the Drummond 10-item checklist. Costs were converted to 2020 US dollars adjusting for inflation and purchasing power parity across currencies.ResultsA total of 27 studies were included. Incremental cost-effectiveness ratios ranged widely across the studies. All pairwise comparisons (11 of 11, 100%) found that ultralong-acting insulin was cost-effective compared with other long-acting insulins, including a long-acting biosimilar. Most pairwise comparisons (24 of 27, 89%) concluded that long-acting insulin was cost-effective compared with intermediate-acting insulin. Few studies compared long-acting insulins with one another.ConclusionsLong-acting insulin may be cost-effective compared with intermediate-acting insulin. Future studies should directly compare biosimilar options and long-acting insulin options and evaluate the long-term consequences of ultralong-acting insulins. 相似文献
2.
3.
多囊卵巢综合征 (polycystic ovary syndrome, PCOS) 是一种在育龄期女性中常见的疾病, 它的主
要临床表现是月经紊乱、 不孕、 痤疮、 多毛等症状, 可能伴随有糖脂代谢异常。 Adropin 是新近发现的一种
分泌性蛋白, 已证实其在调节糖脂代谢、 改善胰岛素抵抗中发挥着作用, 但具体作用机制及其临床意义尚
未完全明确。 文章简要综述 Adropin 蛋白的作用机理及其在多囊卵巢综合征中的研究进展及临床意义。 相似文献
4.
Marc Evans MD Susanne Engberg MD Mads Faurby MSc João Diogo Da Rocha Fernandes MSc Pollyanna Hudson MSc William Polonsky PhD 《Diabetes, obesity & metabolism》2022,24(3):377-390
We designed a systematic literature review to identify available evidence on adherence to and persistence with antidiabetic medication in people with type 2 diabetes (T2D). Electronic screening and congress searches identified real-world noninterventional studies (published between 2010 and October 2020) reporting estimates of adherence to and persistence with antidiabetic medication in adults with T2D, and associations with glycaemic control, microvascular and/or macrovascular complications, hospitalizations and healthcare costs. Ninety-two relevant studies were identified, the majority of which were retrospective and reported US data. The proportions of patients considered adherent (median [range] 51.2% [9.4%-84.3%]) or persistent (median [range] 47.7% [16.9%-94.0%]) varied widely across studies. Multiple studies reported an association between greater adherence/persistence and greater reductions in glycated haemoglobin levels. Better adherence/persistence was associated with fewer microvascular and/or macrovascular outcomes, although there was little consistency across studies in terms of which outcomes were improved. More adherent and more persistent patients were typically less likely to be hospitalized or to have emergency department visits/admissions and spent fewer days in hospital annually than less adherent/persistent patients. Greater adherence and persistence were generally associated with lower hospitalization costs, higher pharmacy costs and lower or budget-neutral total healthcare costs compared with lower adherence/persistence. In conclusion, better adherence and persistence in people with T2D is associated with lower rates of microvascular and/or macrovascular outcomes and inpatient hospitalization, and lower or budget-neutral total healthcare expenditure. Education and treatment strategies to address suboptimal adherence and persistence are needed to improve clinical and economic outcomes. 相似文献
5.
6.
通过回顾分析我院2例确诊为胰岛素自身免疫综合征(IAS)患者的临床资料,并复习相关文献,总结发病机制及治疗方法,探讨IAS患者的临床特点,提高对低血糖症的诊治水平。 相似文献
7.
8.
Omid Asbaghi Behzad Nazarian
eljko Reiner Elaheh Amirani Fariba Kolahdooz Maryam Chamani Zatollah Asemi 《Phytotherapy research : PTR》2020,34(2):239-253
The aim of this systematic review and meta‐analysis was to analyze the effects of grape seed extract (GSE) on glycemic control and serum lipoproteins, inflammation and body weight. Two independent authors systematically searched online databases including EMBASE, Scopus, PubMed, Cochrane Library, and Web of Science from inception until May 30, 2019. Cochrane Collaboration risk of bias tool was applied to assess the methodological quality of included trials. The heterogeneity among the included studies was assessed using Cochrane's Q test and I‐square (I2) statistic. Data were pooled using a random‐effects model and weighted mean difference (WMD) was considered as the overall effect size. Fifty trials were included in this meta‐analysis. Pooling effect sizes from studies demonstrated a significant decrease in fasting plasma glucose (FPG) (WMD): ?2.01; 95% confidence interval (CI): ?3.14, ?0.86), total cholesterol (TC; WMD: ?6.03; 95% CI: ?9.71, ?2.35), low‐density lipoprotein (LDL) cholesterol (WMD: ?4.97; 95% CI: ?8.37, ?1.57), triglycerides (WMD: ?6.55; 95% CI: ?9.28, ?3.83), and C‐reactive protein (CRP) concentrations (WMD: ?0.81; 95% CI: ?1.25, ?0.38) following GSE therapy. Grape seed did not influence HbA1c, HDL cholesterol levels, and anthropometric measurements. This meta‐analysis demonstrated that GSE intake significantly reduced FPG, TC, LDL cholesterol, triglycerides, and CRP levels. 相似文献
9.
目的以肠道微生态为切入点探讨补肾化浊方联合粪菌移植治疗多囊卵巢综合征(PCOS)潜在机制。方法将30只6周龄SD大鼠随机分为空白组、模型组、中药组、粪菌移植组、中药+粪菌移植组,每组6只。来曲唑1 mg/(kg d)灌胃51 d,第22日起,中药组加灌补肾化浊方21.7 g/(kg d),粪菌移植组加灌新鲜粪便2 g/(kg d),中药+粪菌移植组加灌补肾化浊方21.7 g/(kg d)和新鲜粪便2 g/(kg d),连续30 d,另设空白组。干预结束后,腹主动脉取血检测大鼠血清性激素、空腹胰岛素(FINS)、空腹血糖(FPG),ELISA检测大鼠血清白细胞介素(IL)-18、肿瘤坏死因子-α(TNF-α)水平,HE染色观察大鼠卵巢形态学变化。结果与空白组比较,模型组大鼠卵巢呈多囊样改变,体质量、睾酮、黄体生成素(LH)/促卵泡激素(FSH)、FPG、HOMA-IR、IL-18、TNF-α水平均明显升高(P<0.01,P<0.001);与模型组比较,中药+粪菌移植组可显著改善上述指标(P<0.05,P<0.01,P<0.001),中药组可显著改善除TNF-α外各项指标(P<0.05,P<0.01),粪菌移植组可显著降低PCOS大鼠LH/FSH、IL-18水平(P<0.01,P<0.001);在降低IL-18水平方面,中药+粪菌移植组作用显著优于中药组(P<0.01)。结论中药联合粪菌移植可显著改善PCOS大鼠生殖和代谢功能,改善慢性炎症状态。 相似文献
10.