全文获取类型
收费全文 | 1681篇 |
免费 | 120篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 45篇 |
妇产科学 | 27篇 |
基础医学 | 262篇 |
口腔科学 | 32篇 |
临床医学 | 210篇 |
内科学 | 267篇 |
皮肤病学 | 26篇 |
神经病学 | 174篇 |
特种医学 | 88篇 |
外科学 | 204篇 |
综合类 | 10篇 |
一般理论 | 4篇 |
预防医学 | 238篇 |
眼科学 | 24篇 |
药学 | 114篇 |
中国医学 | 1篇 |
肿瘤学 | 76篇 |
出版年
2023年 | 25篇 |
2022年 | 24篇 |
2021年 | 101篇 |
2020年 | 61篇 |
2019年 | 78篇 |
2018年 | 77篇 |
2017年 | 52篇 |
2016年 | 52篇 |
2015年 | 64篇 |
2014年 | 68篇 |
2013年 | 76篇 |
2012年 | 144篇 |
2011年 | 151篇 |
2010年 | 68篇 |
2009年 | 53篇 |
2008年 | 103篇 |
2007年 | 74篇 |
2006年 | 81篇 |
2005年 | 72篇 |
2004年 | 47篇 |
2003年 | 43篇 |
2002年 | 26篇 |
2001年 | 12篇 |
2000年 | 7篇 |
1999年 | 13篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1994年 | 7篇 |
1993年 | 8篇 |
1992年 | 14篇 |
1991年 | 14篇 |
1990年 | 18篇 |
1989年 | 12篇 |
1988年 | 11篇 |
1987年 | 23篇 |
1986年 | 22篇 |
1985年 | 7篇 |
1984年 | 10篇 |
1983年 | 9篇 |
1982年 | 3篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1974年 | 9篇 |
1973年 | 4篇 |
1972年 | 7篇 |
1970年 | 5篇 |
1968年 | 5篇 |
1967年 | 3篇 |
1966年 | 3篇 |
排序方式: 共有1805条查询结果,搜索用时 31 毫秒
1.
Emma Carpenter Bethany G. Everett Madelyne Z. Greene Sadia Haider C. Emily Hendrick Jenny A. Higgins 《Social work in health care》2020,59(3):180-198
ABSTRACTSexual minority women (SMW) face both increased risk for unintended pregnancy and barriers to achieving wanted pregnancy, but little research investigates SMW’s pregnancy desires. To fill this gap, we conducted five focus groups and 11 in-depth interviews with 20-30-year-old SMW in three US cities. Findings highlight that the heteronormative pregnancy planning paradigm lacks salience for SMW. While some SMW clearly wish to avoid pregnancy, many others are unsure, and factors influencing this uncertainty include relationship context, anticipating logistical barriers, and discord between queer identity and pregnancy. 相似文献
2.
3.
4.
5.
6.
7.
Amina Amadou Heinz Freisling Mazda Jenab Konstantinos K. Tsilidis Antonia Trichopoulou Paolo Boffetta Bethany Van Guelpen Olatz Mokoroa Tom Wilsgaard Frank Kee Ben Schttker Jos M. Ordez-Mena Satu Mnnist Stefan Sderberg Roel C. H. Vermeulen J. Ramn Quirs Linda M. Liao Rashmi Sinha Kari Kuulasmaa Hermann Brenner Isabelle Romieu 《British journal of cancer》2021,124(11):1882
Background We investigated whether associations between prevalent diabetes and cancer risk are pertinent to older adults and whether associations differ across subgroups of age, body weight status or levels of physical activity.Methods We harmonised data from seven prospective cohort studies of older individuals in Europe and the United States participating in the CHANCES consortium. Cox proportional hazard regression was used to estimate the associations of prevalent diabetes with cancer risk (all cancers combined, and for colorectum, prostate and breast). We calculated summary risk estimates across cohorts using pooled analysis and random-effects meta-analysis.Results A total of 667,916 individuals were included with an overall median (P25–P75) age at recruitment of 62.3 (57–67) years. During a median follow-up time of 10.5 years, 114,404 total cancer cases were ascertained. Diabetes was not associated with the risk of all cancers combined (hazard ratio (HR) = 0.94; 95% confidence interval (CI): 0.86–1.04; I2 = 63.3%). Diabetes was positively associated with colorectal cancer risk in men (HR = 1.17; 95% CI: 1.08–1.26; I2 = 0%) and a similar HR in women (1.13; 95% CI: 0.82–1.56; I2 = 46%), but with a confidence interval including the null. Diabetes was inversely associated with prostate cancer risk (HR = 0.81; 95% CI: 0.77–0.85; I2 = 0%), but not with postmenopausal breast cancer (HR = 0.96; 95% CI: 0.89–1.03; I2 = 0%). In exploratory subgroup analyses, diabetes was inversely associated with prostate cancer risk only in men with overweight or obesity.Conclusions Prevalent diabetes was positively associated with colorectal cancer risk and inversely associated with prostate cancer risk in older Europeans and Americans.Subject terms: Risk factors, Cancer epidemiology 相似文献
8.
ABSTRACTWe narrate our personal journey through the political minefield that is postpartum crisis by examining our communicative strategies across friendship, research partnership and as mothers on social media platforms. In a country with the highest postpartum maternal death rate in the industrialized world, we argue sharing narratives is a radical feminist act and one that must continue to draw attention to marginalized bodies. We hope to elevate the study of communication challenges mothers may experience for personal and political reasons. 相似文献
9.
Isabel Tol Elspeth Cumber Daphne Nakakande Silvana Wijaya Catherine Turberfield Abdul Badran Safia Siddiqui Prakhar Srivastava Bethany Chung Molly Dineen Cariosa Devlin Claire Worrall Rebecca Green Emily Bennett Elizabeth Golding Ashling Lillis Ami Sabharwal Andrew S. Protheroe Robert A. Watson 《European journal of cancer care》2020,29(3)
10.
Bethany Figg 《Journal of consumer health on the Internet》2019,23(1):70-82
The National Vaccine Program Office (NVPO) manages <www.vaccines.gov> and is part of the U.S. Department of Health and Human Services (HHS). Vaccines.gov offers reliable information from the federal government on vaccines, immunizations, and vaccine-preventable diseases. The web site works with the Centers for Disease Control and Prevention (CDC), National Institutes of Health (NIH), Food and Drug Administration (FDA) and many other government agencies to ensure all information on the web site is accurate and relevant. The web site encourages readers to share the information on the site with friends, family, and patients to promote health literacy on vaccines. 相似文献