全文获取类型
收费全文 | 191983篇 |
免费 | 35232篇 |
国内免费 | 2518篇 |
专业分类
耳鼻咽喉 | 5713篇 |
儿科学 | 6344篇 |
妇产科学 | 3034篇 |
基础医学 | 8528篇 |
口腔科学 | 2210篇 |
临床医学 | 31240篇 |
内科学 | 55170篇 |
皮肤病学 | 7940篇 |
神经病学 | 18590篇 |
特种医学 | 7989篇 |
外国民族医学 | 2篇 |
外科学 | 48205篇 |
综合类 | 984篇 |
现状与发展 | 73篇 |
一般理论 | 32篇 |
预防医学 | 10515篇 |
眼科学 | 4278篇 |
药学 | 4328篇 |
1篇 | |
中国医学 | 81篇 |
肿瘤学 | 14476篇 |
出版年
2024年 | 525篇 |
2023年 | 4987篇 |
2022年 | 1541篇 |
2021年 | 4202篇 |
2020年 | 6537篇 |
2019年 | 3269篇 |
2018年 | 8635篇 |
2017年 | 8183篇 |
2016年 | 9244篇 |
2015年 | 9486篇 |
2014年 | 17051篇 |
2013年 | 17655篇 |
2012年 | 8851篇 |
2011年 | 9091篇 |
2010年 | 12230篇 |
2009年 | 15745篇 |
2008年 | 8687篇 |
2007年 | 7249篇 |
2006年 | 9519篇 |
2005年 | 6672篇 |
2004年 | 5593篇 |
2003年 | 4559篇 |
2002年 | 4357篇 |
2001年 | 4065篇 |
2000年 | 3160篇 |
1999年 | 3500篇 |
1998年 | 4062篇 |
1997年 | 3746篇 |
1996年 | 3609篇 |
1995年 | 3453篇 |
1994年 | 2165篇 |
1993年 | 1742篇 |
1992年 | 1510篇 |
1991年 | 1529篇 |
1990年 | 1179篇 |
1989年 | 1309篇 |
1988年 | 1137篇 |
1987年 | 961篇 |
1986年 | 977篇 |
1985年 | 833篇 |
1984年 | 686篇 |
1983年 | 643篇 |
1982年 | 670篇 |
1981年 | 536篇 |
1980年 | 512篇 |
1979年 | 380篇 |
1978年 | 414篇 |
1977年 | 455篇 |
1975年 | 328篇 |
1972年 | 327篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
53.
Pavan Brahmamdam Stephen L. Carveth Mary Smyth Brian S. Gendelman M. Jeffrey Maisels 《Journal of pediatric surgery》2019,54(9):1800-1803
PurposeTo examine what proportion of caregivers, if given a choice, would choose medical versus surgical treatment of appendicitis and what factors would be important in their decision.MethodsA survey was devised and given to the caregivers of children presenting to the pediatrician for a routine visit in community and academic pediatric clinics. The survey presented a summary of outcomes after medical (non-operative) and surgical treatment of uncomplicated appendicitis. Participants were then asked to choose medical versus surgical treatment if their child were to develop appendicitis. They were also asked to rate the importance of certain factors in their decision ? 1 being “not important” and 5 being “very important”.ResultsFour hundred surveys were distributed with an 86.2% (345/400) response rate. Six percent (21/342) of respondents reported a history of appendicitis and 49.4% (168/340) reported having known someone who had appendicitis. The majority of respondents, 85.3% (284/333), were mothers. A minority of respondents, 41.7% (95% CI: 36.7, 47.0), chose medical treatment over surgery for appendicitis. There was no statistical difference in the proportion of mothers (41.6%) versus fathers who chose medical treatment (41.3%). Caregivers who chose medical treatment were more likely to rate time in hospital (p = .008) and time out of school (p = 05) as important in decision making when compared with those who chose surgery. Those who chose surgical treatment were more likely to rate risk of recurrent appendicitis (p < .001) as important to decision making. In the multivariate analysis, those who rated time in hospital as very important had more than twice the odds of choosing medical therapy (OR 2.20, p = 0.02) when compared with those who rated it as less important. Not knowing someone who has had appendicitis was significantly associated with choosing medical therapy when compared with those who do know someone who has had appendicitis, OR 2.3, p = .002. Rating pain as very important was also significantly associated with choosing medical therapy, when compared to those rating pain 1–3, OR 3.38, p = .03.ConclusionsIn this survey of caregivers of children presenting for routine care, 41.7% would choose medical, or non-operative, therapy for their children with acute appendicitis. The risk of recurrence, time in hospital, and time out of school, pain, and knowing someone who has had appendicitis were all important factors that families may consider when making a decision. These data may be useful for surgeons counseling patients on which treatment to pursue. 相似文献
54.
55.
56.
57.
Brian C. Werner 《Arthroscopy》2019,35(4):1072-1073
Achieving tendon-bone healing continues to be challenging after arthroscopic rotator cuff repair, particularly for larger tears, despite significant improvements in repair techniques and implants. Considerable effort has been invested in research to identify methods to improve healing, including patches and injectable biologics. Parathyroid hormone improves tendon-to-bone healing. Teriparatide is osteogenic, stimulating bone growth, and chondrogenic, promoting cartilage formation at the enthesis. However, it could be difficult to justify the expense and potential risk of systemic administration of a recombinant hormone to improve structural healing until improvement in clinical outcomes can be shown. 相似文献
58.
Marie V. Plaisime PhD MPH Marie Jipguep-Akhtar PhD Joseph J. Locascio PhD Harolyn M. E. Belcher MD MHS Rachel R. Hardeman PhD MPH Katherine Picho-Kiroga PhD Sylvia P. Perry PhD Sean M. Phelan PhD MPH Michelle van Ryn PhD LMFT MPH John F. Dovidio PhD 《Health services research》2023,58(Z2):229-237
Objective
To examine the experience of interracial anxiety among health professionals and how it may affect the quality of their interactions with patients from racially marginalized populations. We explored the influence of prior interracial exposure—specifically through childhood neighborhoods, college student bodies, and friend groups—on interracial anxiety among medical students and residents. We also examined whether levels of interracial anxiety change from medical school through residency.Data Source
Web-based longitudinal survey data from the Medical Student Cognitive Habits and Growth Evaluation Study.Study Design
We used a retrospective longitudinal design with four observations for each trainee. The study population consisted of non-Black US medical trainees surveyed in their 1st and 4th years of medical school and 2nd and 3rd years of residency. Mixed effects longitudinal models were used to assess predictors of interracial anxiety and assess changes in interracial anxiety scores over time.Principal Findings
In total, 3155 non-Black medical trainees were followed for 7 years. Seventy-eight percent grew up in predominantly White neighborhoods. Living in predominantly White neighborhoods and having less racially diverse friends were associated with higher levels of interracial anxiety among medical trainees. Trainees' interracial anxiety scores did not substantially change over time; interracial anxiety was highest in the 1st year of medical school, lowest in the 4th year, and increased slightly during residency.Conclusions
Neighborhood and friend group composition had independent effects on interracial anxiety, indicating that premedical racial socialization may affect medical trainees' preparedness to interact effectively with diverse patient populations. Additionally, the lack of substantial change in interracial anxiety throughout medical training suggests the importance of providing curricular tools and structure (e.g., instituting interracial cooperative learning activities) to foster the development of healthy interracial relationships. 相似文献59.
60.
O’Beirne Sarah L. Chazen J. Levi Cornman-Homonoff Joshua Carey Bridget T. Gelbman Brian D. 《Lung》2019,197(6):727-733
Lung - Diaphragmatic paralysis (DP) is an important cause of dyspnea with many underlying etiologies; however, frequently no cause is identified despite extensive investigation. We hypothesized... 相似文献