全文获取类型
收费全文 | 1480篇 |
免费 | 46篇 |
国内免费 | 28篇 |
专业分类
耳鼻咽喉 | 42篇 |
儿科学 | 32篇 |
妇产科学 | 211篇 |
基础医学 | 144篇 |
口腔科学 | 55篇 |
临床医学 | 106篇 |
内科学 | 204篇 |
皮肤病学 | 8篇 |
神经病学 | 70篇 |
特种医学 | 178篇 |
外国民族医学 | 6篇 |
外科学 | 296篇 |
综合类 | 10篇 |
预防医学 | 26篇 |
眼科学 | 6篇 |
药学 | 118篇 |
中国医学 | 7篇 |
肿瘤学 | 35篇 |
出版年
2021年 | 19篇 |
2020年 | 9篇 |
2019年 | 18篇 |
2018年 | 19篇 |
2017年 | 8篇 |
2016年 | 10篇 |
2015年 | 18篇 |
2014年 | 19篇 |
2013年 | 25篇 |
2012年 | 48篇 |
2011年 | 54篇 |
2010年 | 39篇 |
2009年 | 37篇 |
2008年 | 60篇 |
2007年 | 78篇 |
2006年 | 65篇 |
2005年 | 68篇 |
2004年 | 57篇 |
2003年 | 46篇 |
2002年 | 60篇 |
2001年 | 53篇 |
2000年 | 67篇 |
1999年 | 65篇 |
1998年 | 24篇 |
1997年 | 19篇 |
1996年 | 13篇 |
1995年 | 15篇 |
1994年 | 10篇 |
1993年 | 20篇 |
1992年 | 35篇 |
1991年 | 40篇 |
1990年 | 26篇 |
1989年 | 33篇 |
1988年 | 39篇 |
1987年 | 29篇 |
1986年 | 38篇 |
1985年 | 32篇 |
1984年 | 35篇 |
1983年 | 23篇 |
1982年 | 10篇 |
1981年 | 11篇 |
1980年 | 12篇 |
1979年 | 18篇 |
1978年 | 20篇 |
1977年 | 10篇 |
1976年 | 14篇 |
1975年 | 13篇 |
1974年 | 10篇 |
1970年 | 7篇 |
1967年 | 9篇 |
排序方式: 共有1554条查询结果,搜索用时 15 毫秒
991.
Heike Anderson‐Schmidt Olga Beltcheva Mariko D. Brandon Enda M. Byrne Eric J. Diehl Laramie Duncan Suzanne D. Gonzalez Eilis Hannon Katri Kantojärvi Iordanis Karagiannidis Mark Z. Kos Eszter Kotyuk Benjamin I. Laufer Katarzyna Mantha Nathaniel W. McGregor Sandra Meier Vanessa Nieratschker Helen Spiers Alessio Squassina Geeta A. Thakur Yash Tiwari Biju Viswanath Michael J. Way Cybele C.P. Wong Lynn E. DeLisi M.D. 《American journal of medical genetics. Part B, Neuropsychiatric genetics》2013,162(2):96-121
992.
Trenor CC Chung RJ Michelson AD Neufeld EJ Gordon CM Laufer MR Emans SJ 《Pediatrics》2011,127(2):347-357
Heightened publicity about hormonal contraception and thrombosis risk and the publication of new guidelines by the World Health Organization in 2009 and the Centers for Disease Control and Prevention in 2010 addressing this complex issue have led to multidisciplinary discussions on the special issues of adolescents cared for at our pediatric hospital. In this review of the literature and new guidelines, we have outlined our approach to the complex patients referred to our center. The relative risk of thrombosis on combined oral contraception is three- to fivefold, whereas the absolute risk for a healthy adolescent on this therapy is only 0.05% per year. This thrombotic risk is affected by estrogen dose, type of progestin, mechanism of delivery, and length of therapy. Oral progestin-only contraceptives and transdermal estradiol used for hormone replacement carry minimal or no thrombotic risk. Transdermal, vaginal, or intrauterine contraceptives and injectable progestins need further study. A personal history of thrombosis, persistent or inherited thrombophilia, and numerous lifestyle choices also influence thrombotic risk. In this summary of one hospital's approach to hormone therapies and thrombosis risk, we review relative-risk data and discuss the application of absolute risk to individual patient counseling. We outline our approach to challenging patients with a history of thrombosis, known thrombophilia, current anticoagulation, or family history of thrombosis or thrombophilia. Our multidisciplinary group has found that knowledge of the guidelines and individualized management plans have been particularly useful for informing discussions about hormonal and nonhormonal options across varied indications. 相似文献
993.
Complement components in breast milk may enhance the local immune response in the gut of infants. In this study, we investigated the expression of complement genes in the mammary gland and attempted to determine possible regulatory mechanisms. We have studied the expression of C3, C4, factor B, and HLA-DRalpha mRNA by in situ hybridization in gestational mammary gland specimens and compared these findings to those in breast tissue affected with an inflammatory process, lactating adenoma or idiopathic gynecomastia. In normal resting breast, only C4 mRNA was noted in some ductal epithelium. In gestational mammary gland, there was a diffuse expression of C4, C3, and factor B mRNA in the epithelial cells of the acini. A similar pattern of complement gene expression was found in localized areas of an infectious inflammatory process. In addition, in the inflammatory specimens, there was also expression of C3 mRNA in infiltrating macrophages (CD 68 positive cells). In gynecomastia, C4 mRNA was noted in ductal epithelium, and there was a marked increased expression of C3 mRNA in the proliferating epithelium of the lactating adenoma. HLA-DRalpha was observed only in macrophages involved in the inflammatory response. Our findings, which reflect the hormonal and inflammatory events in vivo, provide new insights as to in situ complement gene expression. 相似文献
994.
995.
996.
997.
Ori Barzilai MD Anne L. Versteeg MD C. Rory Goodwin MD Arjun Sahgal MD Laurence D. Rhines MD Daniel M. Sciubba MD James M. Schuster MD PhD Michael H. Weber MD PhD Aron Lazary MD PhD Michael G. Fehlings MD PhD Michelle J. Clarke MD Paul M. Arnold MD Stefano Boriani MD Chetan Bettegowda MD PhD Ziya L. Gokaslan MD Charles G. Fisher MD MHSc Ilya Laufer MD MS for the AOSpine Knowledge Forum Tumor 《Cancer》2019,125(23):4224-4231
998.
999.
Stephanie Flukes Ilya Laufer Jennifer Cracchiolo Eliza Geer Andrew L. Lin Jess Brallier Van Tsui Anoushka Afonso Viviane Tabar Marc A. Cohen 《世界耳鼻咽喉头颈外科杂志(英文)》2022,8(4):330
Evidence‐based enhanced recovery after surgery (ERAS) programs aim to improve patient outcomes and shorten hospital stays. The objective of this study is to describe the development, implementation, and evolution of an ERAS protocol to optimize the perioperative management for patients undergoing endoscopic skull base surgery for pituitary tumors. A systematic review of the literature was performed, best practices were discussed with stakeholders, and institutional guidelines were established and implemented. Key performance indicators (KPI) were measured and patient‐reported outcome surveys were collected. The ERAS protocol was introduced successfully at our institution. We describe the process of initiation of the program and the perioperative management of our patients. We demonstrated the feasibility of integration of ERAS protocols for pituitary tumors with multidisciplinary engagement, with a particular emphasis on the use of data informatics and metrics to monitor outcomes. We expect that this approach will translate to improved quality of care for these often‐complex patients. 相似文献
1000.