全文获取类型
收费全文 | 16010篇 |
免费 | 1138篇 |
国内免费 | 72篇 |
专业分类
耳鼻咽喉 | 76篇 |
儿科学 | 346篇 |
妇产科学 | 528篇 |
基础医学 | 2685篇 |
口腔科学 | 189篇 |
临床医学 | 1598篇 |
内科学 | 3779篇 |
皮肤病学 | 138篇 |
神经病学 | 1415篇 |
特种医学 | 544篇 |
外国民族医学 | 1篇 |
外科学 | 2555篇 |
综合类 | 142篇 |
一般理论 | 7篇 |
预防医学 | 934篇 |
眼科学 | 134篇 |
药学 | 997篇 |
中国医学 | 20篇 |
肿瘤学 | 1132篇 |
出版年
2023年 | 45篇 |
2022年 | 33篇 |
2021年 | 195篇 |
2020年 | 132篇 |
2019年 | 255篇 |
2018年 | 328篇 |
2017年 | 205篇 |
2016年 | 264篇 |
2015年 | 355篇 |
2014年 | 471篇 |
2013年 | 682篇 |
2012年 | 997篇 |
2011年 | 1122篇 |
2010年 | 711篇 |
2009年 | 690篇 |
2008年 | 1122篇 |
2007年 | 1133篇 |
2006年 | 1124篇 |
2005年 | 1185篇 |
2004年 | 1081篇 |
2003年 | 1056篇 |
2002年 | 1057篇 |
2001年 | 161篇 |
2000年 | 136篇 |
1999年 | 159篇 |
1998年 | 200篇 |
1997年 | 187篇 |
1996年 | 153篇 |
1995年 | 187篇 |
1994年 | 164篇 |
1993年 | 160篇 |
1992年 | 137篇 |
1991年 | 105篇 |
1990年 | 86篇 |
1989年 | 84篇 |
1988年 | 80篇 |
1987年 | 63篇 |
1986年 | 70篇 |
1985年 | 51篇 |
1984年 | 70篇 |
1983年 | 55篇 |
1982年 | 71篇 |
1981年 | 86篇 |
1980年 | 44篇 |
1979年 | 41篇 |
1978年 | 40篇 |
1977年 | 28篇 |
1976年 | 28篇 |
1975年 | 31篇 |
1973年 | 21篇 |
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
1.
2.
Miranda M. Fidler-Benaoudia Lindsey A. Torre Freddie Bray Jacques Ferlay Ahmedin Jemal 《International journal of cancer. Journal international du cancer》2020,147(3):811-819
Previous studies have reported converging lung cancer rates between sexes. We examine lung cancer incidence rates in young women vs. young men in 40 countries across five continents. Lung and bronchial cancer cases by 5-year age group (ages 30–64) and 5-year calendar period (1993–2012) were extracted from Cancer Incidence in Five Continents. Female-to-male incidence rate ratios (IRRs) and 95% confidence intervals (95%CIs) were calculated by age group and birth cohort. Among men, age-specific lung cancer incidence rates generally decreased in all countries, while in women the rates varied across countries with the trends in most countries stable or declining, albeit at a slower pace compared to those in men. As a result, the female-to-male IRRs increased among recent birth cohorts, with IRRs significantly greater than unity in Canada, Denmark, Germany, New Zealand, the Netherlands and the United States. For example, the IRRs in ages 45–49 year in the Netherlands increased from 0.7 (95% CI: 0.6–0.8) to 1.5 (95% CI: 1.4–1.7) in those born circa 1948 and 1963, respectively. Similar patterns, though nonsignificant, were found in 23 additional countries. These crossovers were largely driven by increasing adenocarcinoma incidence rates in women. For those countries with historical smoking data, smoking prevalence in women approached, but rarely exceeded, those of men. In conclusion, the emerging higher lung cancer incidence rates in young women compared to young men is widespread and not fully explained by sex differences in smoking patterns. Future studies are needed to identify reasons for the elevated incidence of lung cancer among young women. 相似文献
3.
4.
Rebecca Carman Lesley Andrew Amanda Devine Jacques Oosthuizen 《Australian and New Zealand journal of public health》2019,43(6):563-569
Objective: To identify behavioural barriers of service provision within general practice that may be impacting the vaccination coverage rates of Aboriginal children in Perth, Western Australia (WA). Methods: A purposive developed survey was distributed to 316 general practices across Perth and three key informant interviews were conducted using a mixed‐methods approach. Results: Of the surveyed participants (n=101), 67.4% were unaware of the low vaccination coverage in Aboriginal children; 64.8% had not received cultural sensitivity training in their workplace and 46.8% reported having inadequate time to follow up overdue child vaccinations. Opportunistic vaccination was not routinely performed by 30.8% of participants. Key themes identified in the interviews were awareness, inclusion and cultural safety. Conclusion: Inadequate awareness of the current rates, in association with a lack of cultural safety training, follow‐up and opportunistic practice, may be preventing greater vaccination uptake in Aboriginal children in Perth. Cultural safety is a critical component of the acceptability and accessibility of services; lack of awareness may restrict the development of strategies designed to equitably address low coverage. Implications: The findings of this study provide an opportunity to raise awareness among clinicians in general practice and inform future strategies to equitably deliver targeted vaccination services to Aboriginal children. 相似文献
5.
6.
Valérie Delisle Jean Perron Valérie Lafrenière-Bessi Jean-Marc Côté Christian Drolet Christian Couture Frédéric Jacques 《The Canadian journal of cardiology》2019,35(4):544.e3-544.e5
Cardiac hemangioma is rare, even more when leading to a cardiovascular collapse in a seemingly healthy newborn. A 6-day-old neonate had a tamponade caused by a basolateral hemangioma of the left ventricle. Partial surgical resection was performed. A congenital lobular capillary hemangioma was diagnosed upon histologic examination. The patient recovered completely and shows normal development at the 12-month follow-up. 相似文献
7.
8.
9.
10.