全文获取类型
收费全文 | 1273576篇 |
免费 | 94324篇 |
国内免费 | 1976篇 |
专业分类
耳鼻咽喉 | 18181篇 |
儿科学 | 42268篇 |
妇产科学 | 37867篇 |
基础医学 | 186836篇 |
口腔科学 | 35356篇 |
临床医学 | 107860篇 |
内科学 | 250559篇 |
皮肤病学 | 26488篇 |
神经病学 | 99215篇 |
特种医学 | 50084篇 |
外国民族医学 | 366篇 |
外科学 | 197506篇 |
综合类 | 26510篇 |
现状与发展 | 1篇 |
一般理论 | 304篇 |
预防医学 | 92425篇 |
眼科学 | 29004篇 |
药学 | 97836篇 |
1篇 | |
中国医学 | 2497篇 |
肿瘤学 | 68712篇 |
出版年
2018年 | 11838篇 |
2015年 | 11628篇 |
2014年 | 16031篇 |
2013年 | 24398篇 |
2012年 | 33616篇 |
2011年 | 35997篇 |
2010年 | 21245篇 |
2009年 | 20053篇 |
2008年 | 35030篇 |
2007年 | 38007篇 |
2006年 | 38554篇 |
2005年 | 37868篇 |
2004年 | 36441篇 |
2003年 | 35418篇 |
2002年 | 34965篇 |
2001年 | 58139篇 |
2000年 | 59637篇 |
1999年 | 50737篇 |
1998年 | 14264篇 |
1997年 | 12822篇 |
1996年 | 13090篇 |
1995年 | 12363篇 |
1994年 | 11716篇 |
1993年 | 10825篇 |
1992年 | 40959篇 |
1991年 | 40384篇 |
1990年 | 39895篇 |
1989年 | 38721篇 |
1988年 | 36127篇 |
1987年 | 35371篇 |
1986年 | 33727篇 |
1985年 | 32146篇 |
1984年 | 23931篇 |
1983年 | 20805篇 |
1982年 | 12345篇 |
1981年 | 10892篇 |
1980年 | 10162篇 |
1979年 | 22623篇 |
1978年 | 15847篇 |
1977年 | 13699篇 |
1976年 | 12940篇 |
1975年 | 14178篇 |
1974年 | 16679篇 |
1973年 | 16057篇 |
1972年 | 15318篇 |
1971年 | 14235篇 |
1970年 | 13211篇 |
1969年 | 12728篇 |
1968年 | 11975篇 |
1967年 | 10477篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
51.
52.
53.
54.
55.
Changhyun Kim B.S. Brittany G. Craiglow M.D. Kalman L. Watsky M.D. Richard J. Antaya M.D. 《Pediatric dermatology》2015,32(4):e161-e162
A 17‐year‐old boy presented with recurring severe dermatitis of the face of 5‐months duration that resembled impetigo. He had been treated with several courses of antibiotics without improvement. Biopsy showed changes consistent with allergic contact dermatitis and patch testing later revealed sensitization to benzoyl peroxide, which the patient had been using for the treatment of acne vulgaris. 相似文献
56.
F. Fruzzetti G. Palla A. Sbrana T. Simoncini M. R. Sessa 《Gynecological endocrinology》2020,36(10):938-940
AbstractObjective: To understand the origin of extremely high gonadotropin levels in a perimenopausal woman.Methods: A 52-year-old woman with a 2?months of amenorrhea followed spontaneous menstrual cycles recovery was referred to our outpatient clinic with elevated follicle-stimulating hormone (FSH, 483 mUI/ml), luteinizing hormone (LH, 475 mUI/ml) and prolactin (PRL, 173?ng/ml). She was known to take levosulpiride. The gonadotropin levels did not fit with the clinical features.Results: A gonadotroph tumor was ruled out. Further analysis confirmed constantly high FSH, LH and PRL levels. The measurements were repeated using different analytical platforms with different results. After serial dilutions, nonlinearity was present suggesting an immunoassay interference. After post-polyethylene glycol recovery, hormone levels appeared in the normal range. Anti-goat antibodies were recognized in the serum of the patient.Conclusions: This case report shows a case of falsely abnormal high gonadotropin and PRL levels in a woman during menopause transition. In the clinical practice the evaluation of gonadotropin profile is not recommended at this age, but the abnormal levels stimulated further evaluation. An interference in the assay due to anti-goat antibodies resulted in abnormally high level of FSH and LH. A strict collaboration between clinicians and the laboratory is needed, when laboratory findings do not correspond to clinical findings. 相似文献
57.
58.
59.
T. Wu L. G. Trahair M. J. Bound C. F. Deacon M. Horowitz C. K. Rayner K. L. Jones 《Diabetic medicine》2015,32(5):595-600
60.
Susan J. Lieff Ari Zaretsky Glen Bandiera Kevin Imrie Salvatore Spadafora Susan Glover Takahashi 《Medical teacher》2016,38(10):1011-1016
Background: Few new Residency Program Directors (PD) are formally trained for the demands and responsibilities of the leadership aspect of their role. Currently, there are no comprehensive frameworks that describe specific leadership competencies that can inform PD self-reflection or faculty development.Methods: The authors developed a Postgraduate Program Director Competency Inventory (PPDCI) in order to frame the performance of PDs for a multisource feedback (MSF) program. The development of the PPDCI occurred in five phases which involved: development of an initial inventory, implementation of a key informant survey of national opinion leaders, execution of a validity survey with postgraduate education leaders and committee members and implementation of a further refined inventory with 17 PD and 147 raters as part of a pilot MSF program.Outcomes: Five distinct domains of leadership competence were identified which included: Communication and relationship management, leadership, professionalism and self-management, environmental engagement, and management skills and knowledge. The content validity of the PPDCI was endorsed by 85% of the key informants. The validity survey indicated strong endorsement of the PPDCI domains and recognition of its utility for both orientation of new PD as well as a frame for self-assessment. The pilot MSF program yielded a further refined and reduced inventory of 26 items of competence as well as recommendations for its utility.Conclusions: Use of this leadership inventory has the potential to ensure effective leadership of postgraduate programs. 相似文献