全文获取类型
收费全文 | 26865篇 |
免费 | 2231篇 |
国内免费 | 333篇 |
学科分类
医药卫生 | 29429篇 |
出版年
2024年 | 37篇 |
2023年 | 380篇 |
2022年 | 495篇 |
2021年 | 966篇 |
2020年 | 1289篇 |
2019年 | 888篇 |
2018年 | 847篇 |
2017年 | 944篇 |
2016年 | 1003篇 |
2015年 | 1009篇 |
2014年 | 2340篇 |
2013年 | 2310篇 |
2012年 | 2237篇 |
2011年 | 2066篇 |
2010年 | 1657篇 |
2009年 | 1425篇 |
2008年 | 1491篇 |
2007年 | 1357篇 |
2006年 | 1194篇 |
2005年 | 923篇 |
2004年 | 804篇 |
2003年 | 751篇 |
2002年 | 477篇 |
2001年 | 463篇 |
2000年 | 356篇 |
1999年 | 240篇 |
1998年 | 224篇 |
1997年 | 198篇 |
1996年 | 167篇 |
1995年 | 132篇 |
1994年 | 105篇 |
1993年 | 89篇 |
1992年 | 75篇 |
1991年 | 83篇 |
1990年 | 63篇 |
1989年 | 44篇 |
1988年 | 43篇 |
1987年 | 43篇 |
1986年 | 29篇 |
1985年 | 36篇 |
1984年 | 32篇 |
1983年 | 26篇 |
1982年 | 16篇 |
1981年 | 14篇 |
1980年 | 20篇 |
1979年 | 13篇 |
1978年 | 5篇 |
1977年 | 6篇 |
1976年 | 8篇 |
1975年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
1.
社会力量具备相应的经济基础和技术条件,对于公立互联网医院体系建设具有积极的促进作用。但是实践中仍然存在商业模式不完善、监管制度不健全等问题。基于经济学契约理论要义,提出在坚持激励与约束机制并举、平衡公私益关系的前提下,通过完善医保政策、构建互联网医疗服务价格分类管理机制来促进社会力量向医疗服务公益性目标回归,并通过构建完善的监督体制来约束部分社会力量的盲目逐利性行为。 相似文献
2.
Comprehensive evidence regarding the treatment of non-anaemic iron deficiency in patients undergoing valvular heart surgery is lacking. This study aimed to investigate the association between non-anaemic iron deficiency and postoperative outcomes in these patients. We retrospectively analysed 321 patients of which 180 (56%) had iron deficiency (defined as serum ferritin < 100 ng.ml-1 or < 300 ng.ml-1 with transferrin saturation < 20%). While the iron-deficient group had lower pre-operative haemoglobin levels than the non-iron deficient group (median (IQR [range]) 134 (127–141 [120–172]) g.l-1, 143 (133–150 [120–179]) g.l-1, p = 0.001), there was no between-group difference in allogeneic red blood cell transfusion. Median (IQR [range]) days alive and out of hospital at postoperative day 90 was 1 day shorter in the iron-deficient group (80 (77–82 [9–85]) days vs. 81 (79–83 [0–85]) days, p = 0.026). In multivariable analysis, only cardiopulmonary bypass duration (p = 0.032) and intra-operative allogeneic red blood cell transfusion (p = 0.011) were significantly associated with reduced days alive and out of hospital at postoperative day 90. Iron deficiency did not exert any adverse influence on secondary outcomes except length of hospital stay. Our findings indicate that non-anaemic iron deficiency alone is not associated with adverse effects in patients undergoing valvular heart surgery when it does not translate into an increased risk of allogeneic transfusion. 相似文献
3.
4.
IntroductionThis study was designed to assess whether a dental caries management protocol combining a single application of 38% silver diamine fluoride (SDF) with comprehensive oral health education will successfully divert high-risk children from dental treatment under dental general anaesthesia (DGA), arrest active caries in primary teeth, and improve parent-reported child oral health–related quality of life (OHRQoL).MethodsChildren aged 2 to 10 years, who attended two public dental agencies in Victoria, Australia, and were unable to tolerate restorative treatments in the clinic setting, elected to participate in either a 38% SDF intervention protocol or, alternatively, referral for DGA. Follow-up examinations were completed at 6 months to assess caries progression, decayed missing filled tooth index, PUFA index (pulpal involvement, ulceration, fistula, abscess), DGA referral rates, and OHRQoL (Early Childhood Oral Health Impact Scale [ECOHIS]).ResultsOf the total sample, 89.5% of children (n = 102) [mean (SD) age, 4.1 (1.0) years] with 401 active carious lesions elected to participate in the 38% SDF protocol; 10.5% (n = 12) of parents opted for referral for treatment under DGA. The proportion of active caries subsequently arrested at follow-up (number of arrested lesions/number of lesions treated) was 0.78 (95% CI, 0.69 to 0.87). There was an 88% reduction in referrals for DGA in eligible children over the 6-month period. The 38% SDF intervention group showed a significant improvement in ECOHIS scores at follow-up (P < .001).DiscussionAdoption of the 38% SDF intervention protocol resulted in a significant reduction in the rate of preventable dental hospitalisations. Most parents opted against referral for DGA. Parent-reported OHRQoL for children improved significantly. 相似文献
5.
6.
目的在上海市浦东新区全科医师队伍中开展心身医学知识培训。方法采用问卷星平台进行问卷调查,选取辖区内45家社区卫生服务中心参加培训的135名学员作为培训组,未参加培训的100名全科医师作为对照组,进行培训效果评估。结果培训组总分高于对照组,差异有显著统计学意义(P0.001),培训后,提升最快的模块依次是心身医学知识的应用(P0.001)、精神科问诊及治疗(P0.001)、社区随访沟通技巧(P0.001)和儿童青少年心身疾病(P=0.002),但焦虑症模块的变化差异无统计学意义(P=0.213);相对于城区的全科医师,乡镇的全科医师培训后,精神科问诊及治疗(P=0.471)和儿童青少年心身疾病(P=0.06)模块的变化均无统计学意义。结论心身医学培训能显著提升全科医师对相应知识的掌握,城区和乡镇的全科医师对心身医学知识的需求有差别,需要进一步精确设计培训模式和方向。 相似文献
7.
8.
9.
10.
Provocation of Atrial Fibrillation Triggers During Ablation: Does the Use of General Anesthesia Affect Inducibility? 下载免费PDF全文