全文获取类型
收费全文 | 1348921篇 |
免费 | 100962篇 |
国内免费 | 4289篇 |
专业分类
耳鼻咽喉 | 16928篇 |
儿科学 | 43977篇 |
妇产科学 | 36728篇 |
基础医学 | 199658篇 |
口腔科学 | 36386篇 |
临床医学 | 131173篇 |
内科学 | 260325篇 |
皮肤病学 | 26658篇 |
神经病学 | 113145篇 |
特种医学 | 48764篇 |
外国民族医学 | 366篇 |
外科学 | 185782篇 |
综合类 | 29091篇 |
现状与发展 | 1篇 |
一般理论 | 477篇 |
预防医学 | 115938篇 |
眼科学 | 29147篇 |
药学 | 99614篇 |
7篇 | |
中国医学 | 3180篇 |
肿瘤学 | 76827篇 |
出版年
2021年 | 11089篇 |
2019年 | 11875篇 |
2018年 | 16586篇 |
2017年 | 12485篇 |
2016年 | 13433篇 |
2015年 | 15399篇 |
2014年 | 21107篇 |
2013年 | 32515篇 |
2012年 | 44895篇 |
2011年 | 47542篇 |
2010年 | 27477篇 |
2009年 | 25279篇 |
2008年 | 43259篇 |
2007年 | 45612篇 |
2006年 | 45697篇 |
2005年 | 44124篇 |
2004年 | 42089篇 |
2003年 | 40008篇 |
2002年 | 38799篇 |
2001年 | 61237篇 |
2000年 | 62955篇 |
1999年 | 52657篇 |
1998年 | 14760篇 |
1997年 | 13413篇 |
1996年 | 13278篇 |
1995年 | 12594篇 |
1994年 | 11741篇 |
1993年 | 11041篇 |
1992年 | 41871篇 |
1991年 | 41045篇 |
1990年 | 39725篇 |
1989年 | 37611篇 |
1988年 | 34807篇 |
1987年 | 33927篇 |
1986年 | 32351篇 |
1985年 | 30862篇 |
1984年 | 23248篇 |
1983年 | 19752篇 |
1982年 | 11846篇 |
1979年 | 20965篇 |
1978年 | 14931篇 |
1977年 | 12144篇 |
1976年 | 11971篇 |
1975年 | 12207篇 |
1974年 | 14905篇 |
1973年 | 14575篇 |
1972年 | 13464篇 |
1971年 | 12502篇 |
1970年 | 11555篇 |
1969年 | 10473篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
Eric S. Zhou Larissa Nekhlyudov Sharon L. Bober 《Translational andrology and urology》2015,4(2):218-231
There is a large and growing population of long-term cancer survivors. Primary care physicians (PCPs) are playing an increasingly greater role in the care of these patients across the continuum of cancer survivorship. In this role, PCPs are faced with the responsibility of managing a range of medical and psychosocial late effects of cancer treatment. In particular, the sexual side effects of treatment which are common and have significant impact on quality of life for the cancer survivor, often go unaddressed. This is an area of clinical care and research that has received increasing attention, highlighted by the presentation of this special issue on Cancer and Sexual Health. The aims of this review are 3-fold. First, we seek to overview common presentations of sexual dysfunction related to major cancer diagnoses in order to give the PCP a sense of the medical issues that the survivor may present with. Barriers to communication about sexual health issues between patient/PCPs in order are also described in order to emphasize the importance of PCPs initiating this important conversation. Next, we provide strategies and resources to help guide the PCP in the management of sexual dysfunction in cancer survivors. Finally, we discuss case examples of survivorship sexual health issues and highlight the role that a PCP can play in each of these case examples. 相似文献
52.
53.
54.
55.
Michael L. Goodman Miriam S. Mutambudzi Stanley Gitari Philip H. Keiser Sarah E. Seidel 《Vulnerable children and youth studies》2016,11(4):366-378
There are an estimated 56 million orphans and vulnerable children across sub-Saharan Africa. Communities typically care for orphan children through informal caring arrangements – either within or outside of kinship networks. Within Kenya, an estimated 250,000 children live on the streets. There is less research related to fostering attitudes of this special population than orphans and vulnerable children generally. Important research over the past decade has illuminated multiple ways in which children are made more vulnerable because of HIV, including parental death and street-migration from HIV-affected households. As HIV transitions from a terminal illness to a chronic, manageable one, research is also required to establish how parents living with HIV can be an asset to children. In this study, we assess whether mothers living with HIV were very willing to foster biologically-related children, and street-involved children, how these fostering attitudes differed from mothers not living with HIV, and whether differences in fostering attitudes by reported HIV status were mediated by social support, family functioning and general self-rated health. Approximately 40% of mothers living with HIV were very willing to provide long-term foster care to biologically-related or street-involved children. This was less than the percentage of mothers not living with HIV, who were very willing to foster biologically-related children (61%) or street-involved children (58%). Significant portions of these differences were explained by social support, family functioning and general self-rated health. Multi-sectoral approaches are suggested by these findings in order to improve the child-fostering capacity of mothers living with HIV. Improving social support, family functioning and general self-rated health among HIV-infected mothers may not only provide protective benefits for the mothers and their children, but also expand the community’s capacity to care for orphan and vulnerable children. 相似文献
56.
57.
58.
William G. Breen Krishan R. Jethwa Nathan Y. Yu Grant M. Spears William S. Harmsen Robert C. Miller Jonathan B. Ashman William G. Rule Terence T. Sio Michelle A. Neben-Wittich Michael G. Haddock Amit Mahipal Mark J. Truty Christopher L. Hallemeier Kenneth W. Merrell 《Practical radiation oncology》2021,11(1):e63-e69
PurposeOur purpose was to determine the effect of chemoradiotherapy (CRT) on patient-reported quality of life (QOL) for patients with intact pancreas cancer.Methods and MaterialsWe reviewed a prospective QOL registry for patients with intact, clinically localized pancreatic ductal adenocarcinoma treated with CRT between June 2015 and November 2018. QOL was assessed pre-CRT (immediately before CRT, after neoadjuvant chemotherapy) and at the completion of CRT with the Functional Assessment of Cancer Therapy-Hepatobiliary (FACT-Hep) and its component parts: FACT-General (FACT-G) and hepatobiliary cancer subscore (HCS). A minimally important difference from pre-CRT was defined as ≥ 6, 5, and 8 points for FACT-G, HCS, and FACT-Hep, respectively.ResultsOf 157 patients who underwent CRT, 100 completed both pre- and post-CRT surveys and were included in the primary analysis. Median age at diagnosis was 65 years (range, 23-90). National Comprehensive Cancer Network resectability status was resectable (3%), borderline resectable (40%), or locally advanced (57%). Folinic acid, 5-fluorouracil, irinotecan, and oxaliplatin (FOLFIRINOX) (75%) or gemcitabine and nab-paclitaxel (42%) were given for a median of 6 cycles (range, 0-42) before CRT. Radiation therapy techniques included 3-dimensional conformal (22%), intensity modulated photon (55%), and intensity modulated proton (23%) radiation therapy to a median dose of 50 Gy (range, 36-62.5). Concurrent chemotherapy was most commonly capecitabine (82%). Sixty-three patients (63%) had surgery after CRT. The mean decline in FACT-G, HCS subscale, and FACT-Hep from pre- to post-CRT was 3.5 (standard deviation [SD], 13.7), 1.7 (SD 7.8), and 5.2 (SD 19.4), respectively. Each of these changes were statistically significant, but did not meet the minimally important difference threshold. Pancreatic head tumor location was associated with decline in FACT-Hep. Nausea was the toxicity with the greatest increase from pre- to post-CRT by both physician-assessment and patient-reported QOL.ConclusionsFor patients with intact pancreatic adenocarcinoma, modern CRT is well tolerated with minimal decline in QOL during treatment. 相似文献
59.
Characteristics of hyperparathyroid states in the Canadian multicentre osteoporosis study (CaMos) and relationship to skeletal markers 下载免费PDF全文
60.