全文获取类型
收费全文 | 29317篇 |
免费 | 1899篇 |
国内免费 | 395篇 |
专业分类
耳鼻咽喉 | 650篇 |
儿科学 | 379篇 |
妇产科学 | 456篇 |
基础医学 | 4775篇 |
口腔科学 | 534篇 |
临床医学 | 2362篇 |
内科学 | 5759篇 |
皮肤病学 | 1418篇 |
神经病学 | 2012篇 |
特种医学 | 2074篇 |
外科学 | 3751篇 |
综合类 | 91篇 |
现状与发展 | 1篇 |
一般理论 | 10篇 |
预防医学 | 880篇 |
眼科学 | 732篇 |
药学 | 2999篇 |
中国医学 | 456篇 |
肿瘤学 | 2272篇 |
出版年
2024年 | 12篇 |
2023年 | 165篇 |
2022年 | 587篇 |
2021年 | 1228篇 |
2020年 | 609篇 |
2019年 | 845篇 |
2018年 | 1008篇 |
2017年 | 830篇 |
2016年 | 1233篇 |
2015年 | 1684篇 |
2014年 | 1973篇 |
2013年 | 2015篇 |
2012年 | 3042篇 |
2011年 | 2860篇 |
2010年 | 1748篇 |
2009年 | 1422篇 |
2008年 | 1841篇 |
2007年 | 1593篇 |
2006年 | 1411篇 |
2005年 | 1284篇 |
2004年 | 943篇 |
2003年 | 843篇 |
2002年 | 732篇 |
2001年 | 287篇 |
2000年 | 258篇 |
1999年 | 209篇 |
1998年 | 119篇 |
1997年 | 79篇 |
1996年 | 61篇 |
1995年 | 40篇 |
1994年 | 60篇 |
1993年 | 42篇 |
1992年 | 56篇 |
1991年 | 64篇 |
1990年 | 48篇 |
1989年 | 62篇 |
1988年 | 40篇 |
1987年 | 40篇 |
1986年 | 34篇 |
1985年 | 28篇 |
1984年 | 25篇 |
1983年 | 9篇 |
1982年 | 12篇 |
1981年 | 16篇 |
1980年 | 18篇 |
1979年 | 17篇 |
1978年 | 10篇 |
1977年 | 12篇 |
1971年 | 6篇 |
1969年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 984 毫秒
991.
992.
Sang Rim Kim Sung Jin Shin Kyu Bum Seo Chen Tai Teong Chang Lim Hyun 《The Journal of foot and ankle surgery》2013,52(2):227-230
A 32-year-old male presented with painful swelling of the sinus tarsi that occurred during daily activities. Diagnostic imaging suggested the presence of a large synovial osteochondromatosis that blocked subtalar motion with deformity of the adjacent bone. The large bony mass was excised, and normal subtalar motion was achieved. 相似文献
993.
Dong Hyuk Nam MD Yong Kang Lee MD Jun Chul Park MD Hyuk Lee MD Sung Kwan Shin MD Sang Kil Lee MD Yong Chan Lee MD Jae-Ho Cheong MD Woo Jin Hyung MD Sung Hoon Noh MD Choong Bai Kim MD 《Annals of surgical oncology》2013,20(12):3905-3911
Background
The clinical usefulness of tumor markers as predictors of treatment outcome in patients with stomach cancer after radical gastrectomy has been poorly defined. The purpose of this study was to evaluate a comprehensive understanding of the impact of early postoperative tumor marker normalization on survival after gastrectomy.Methods
Between January 2001 and December 2007, we enrolled 206 patients who had received radical gastrectomy as an initial treatment and had elevated carcinoembryonic antigen (CEA) (>5 ng/mL) or carbohydrate antigen (CA) 19-9 (>37 U/mL) levels. Early tumor marker response was defined as a normalization of preoperative CEA or CA19-9 values 1–2 months after gastrectomy.Results
The mean patient age was 61 years (range 29–84 years), and 139 patients (67.5 %) were male. Early tumor marker response was identified in 150 of 206 (72.8 %) patients. Of the patients, 49 (23.8 %), 41 (19.9 %), and 116 (56.4 %) were stages I, II, and III, respectively, according to the seventh edition of the American Joint Commission on Cancer (AJCC) staging system. Both disease-free survival (DFS) and overall survival (OS) were significantly longer in patients with tumor marker response compared with nonresponse (61.5 vs. 37.6 months; P = 0.010 and 71.3 vs. 50.9 months; P = 0.008, respectively). Multivariate analyses showed that high CA19-9 level, early tumor marker response, and tumor, node, metastasis classification system stage were independent predictors of DFS and OS (P < 0.05).Conclusions
Early CEA or CA19-9 normalization after radical gastrectomy is a strong prognostic factor for gastric cancer, especially in patients with high preoperative levels of tumor markers. 相似文献994.
995.
996.
The predisposing factors for the heterotopic ossification after cervical artificial disc replacement
Seong Yi Dong Ah Shin Keung Nyun Kim Gwihyun Choi Hyun Chul Shin Keun Su Kim Do Heum Yoon 《The spine journal》2013,13(9):1048-1054
Background contextHeterotopic ossification (HO) is defined as a formation of bone outside the skeletal system. The reported HO occurrence rate in cervical artificial disc replacement (ADR) is unexpectedly high and is known to vary. However, the predisposing factors for HO in cervical ADR have not yet been elucidated.PurposeInvestigation of the predisposing factors of HO in cervical arthroplasty and the relationship between degeneration of the cervical spine and HO occurrence.Study designRetrospective study to discover predisposing factors of HO in cervical arthroplasty.Patient sampleA total of 170 patients who underwent cervical ADR were enrolled including full follow-up clinical and radiologic data.Outcome measuresRadiologic outcomes were assessed by identification of HOs according to McAfee's classifications.MethodsThis study enrolled a total of 170 patients who underwent cervical ADR. Pre-existing degenerative change included anterior or posterior osteophytes, ossification of the anterior longitudinal ligament, posterior longitudinal ligament, or ligamentum nuchae. The relationships between basic patient data, pre-existing degenerative change, and HO were investigated using linear logistic regression analysis.ResultsAmong all 170 patients, HO was found in 69 patients (40.6%). Among the postulated predisposing factors, only male gender and artificial disc device type were shown to be statistically significant. Unexpectedly, preoperative degenerative changes in the cervical spine exerted no significant influence on the occurrence of HOs. The odds ratio of male gender compared with female gender was 2.117. With regard to device type, the odds ratios of Mobi-C (LDR medical, Troyes, France) and ProDisc-C (Synthes, Inc., West Chester, PA, USA) were 5.262 and 7.449, respectively, compared with the Bryan disc.ConclusionsDefinite differences in occurrence rate according to the gender of patients and the prosthesis type were identified in this study. Moreover, factors indefinably expected to influence HO in the past were not shown to be risk factors thereof, the results of which may be meaningful to future studies. 相似文献
997.
Sclerosing lymphocytic lobulitis (SLL) is a rare inflammatory disorder, which is also known as fibrous mastopathy and lymphocytic mastitis. It is commonly associated with autoimmune disorders, particularly type 1 diabetes and thyroiditis. We report the case of a 28‐year‐old woman diagnosed as SLL with Hashimoto's thyroiditis, but without diabetes. She presented suspicious microcalcifications without palpable mass in routine mammograms in both breasts. She had been diagnosed as Hashimoto's thyroiditis several years before and had been followed up in endo‐clinics. 相似文献
998.
Gazi Huri Ömer Sunkar Biçer Levent Özgözen Yurdanur Uçar Nickolas G. Garbis Yoon Suk Hyun 《Foot and Ankle Surgery》2013,19(4):261-266
BackgroundMinimally invasive Q3 repair has been proposed for acute Achilles tendon rupture with low rate of complications. However there are still controversies about optimal technique. In this study we aimed to describe Endobutton-assisted modified Bunnell configuration as a new Achilles tendon repair technique and evaluate its biomechanical properties comparing with native tendon and Krackow technique.Methods27 ovine Achilles tendons were obtained and randomly placed into 3 groups with 9 specimens ineach. The Achilles tendons were repaired with Endobutton-assisted modified Bunnell technique in group 1, Krackow suture technique in group 2 and group 3 was defined as the control group including native tendons. Unidirectional tensile loading to failure was performed at 25 mm/min. Biomechanicalproperties such as peak force to failure (N), stress at peak (MPa), elongation at failure, and Young'smodulus (GPa) was measured for each group. All groups were compared with each other using one-wayANOVA followed by the Tukey HSD multiple comparison test (a = 0.05).ResultsThe average peak force (N) to failure of group 1 and group 2 and control group was 415.6 ± 57.6, 268.1 ± 65.2 and 704.5 ± 85.8, respectively. There was no statistically significant difference between native tendon and group 1 for the amount elongation at failure (p > 0.05).ConclusionsRegarding the results, we concluded that Endobutton-assisted modified Bunnell technique provides stronger fixation than conventional techniques. It may allow early range of motion and can be easily applied in minimally invasive and percutaneous methods particularly for cases with poor quality tendon at the distal part of rupture.Level of evidenceLevel II, Biomechanical research study. 相似文献
999.
1000.
Dae-Geun Jeon Won Seok Song Chang-Bae Kong Wan Hyeong Cho Sang Hyun Cho Jeong Dong Lee Soo-Yong Lee 《Clinics in Orthopedic Surgery》2013,5(3):216-224