全文获取类型
收费全文 | 260244篇 |
免费 | 14732篇 |
国内免费 | 1679篇 |
专业分类
耳鼻咽喉 | 1934篇 |
儿科学 | 7499篇 |
妇产科学 | 8637篇 |
基础医学 | 21171篇 |
口腔科学 | 3708篇 |
临床医学 | 15878篇 |
内科学 | 31789篇 |
皮肤病学 | 2604篇 |
神经病学 | 4756篇 |
特种医学 | 12778篇 |
外国民族医学 | 219篇 |
外科学 | 29278篇 |
综合类 | 8218篇 |
现状与发展 | 15篇 |
一般理论 | 14篇 |
预防医学 | 5629篇 |
眼科学 | 1806篇 |
药学 | 9208篇 |
83篇 | |
中国医学 | 1266篇 |
肿瘤学 | 110165篇 |
出版年
2024年 | 2609篇 |
2023年 | 7485篇 |
2022年 | 10575篇 |
2021年 | 12855篇 |
2020年 | 12283篇 |
2019年 | 9180篇 |
2018年 | 10681篇 |
2017年 | 9561篇 |
2016年 | 9080篇 |
2015年 | 10386篇 |
2014年 | 17870篇 |
2013年 | 16384篇 |
2012年 | 14973篇 |
2011年 | 14200篇 |
2010年 | 13267篇 |
2009年 | 11378篇 |
2008年 | 9369篇 |
2007年 | 9452篇 |
2006年 | 8568篇 |
2005年 | 7796篇 |
2004年 | 6899篇 |
2003年 | 6340篇 |
2002年 | 5735篇 |
2001年 | 5332篇 |
2000年 | 4559篇 |
1999年 | 4084篇 |
1998年 | 2166篇 |
1997年 | 1749篇 |
1996年 | 1693篇 |
1995年 | 1439篇 |
1994年 | 1100篇 |
1993年 | 938篇 |
1992年 | 1898篇 |
1991年 | 1741篇 |
1990年 | 1624篇 |
1989年 | 1534篇 |
1988年 | 1301篇 |
1987年 | 1480篇 |
1986年 | 1427篇 |
1985年 | 695篇 |
1984年 | 574篇 |
1983年 | 382篇 |
1982年 | 375篇 |
1981年 | 337篇 |
1980年 | 294篇 |
1979年 | 240篇 |
1978年 | 159篇 |
1976年 | 147篇 |
1966年 | 184篇 |
1965年 | 147篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
4.
5.
6.
7.
8.
The aim of our study was to determine the incidence, timing, and severity of vaginal stenosis in patients with carcinoma of the cervix who had received pelvic and/or vaginal radiotherapy as part of their treatment. We also sought to determine if there were any predisposing factors for the development of stenosis. A retrospective chart review was undertaken for all the patients diagnosed with carcinoma of the cervix between January 1, 1990, and December 31, 2000 and treated with pelvic and/or vaginal radiation at Westmead Hospital. Since January 1, 1990, data regarding vaginal stenosis has been prospectively recorded on all the patients. Data collected included patient demographics, stage of disease, treatments administered, and incidence, timing, and severity of vaginal stenosis. One hundred and eighty-eight patients were treated. Mean age was 58.6 years. Thirteen percent of patients had stage IB disease, 45% had stage II disease, 39.5% had stage III disease, and 1.5% had stage IV disease. One hundred and seventy-nine patients returned for follow-up, and data regarding vaginal toxicity were available in 98%. Twenty-seven percent had grade 1 toxicity (partial stenosis or shortening but not complete occlusion), and 11% had grade 2 (complete occlusion). Stenosis of any grade was noted at a mean of 9.6 months and median of 7.5 months (range, 26 days-5.6 years) from completion of treatment. The only prognostic factor associated with increased risk of stenosis was age greater than 50 years (odds ratio 2.26). Vaginal stenosis is a common complication of pelvic and vaginal radiotherapy, occurring in 38% of patients. Stenosis occurs most often in the first year after treatment. Patients over the age of 50 are most at risk. 相似文献
9.
Of 431 patients with gastric cancer observed in our institution, 23 (5.3%) had early gastric cancer (EGC). Macroscopic presentation, histology, depth of invasion, and lymph node involvement were evaluated in all the cases. All patients underwent surgery and an intensive follow-up was performed. Five of the 23 patients progressed, and the risk factors were examined. Histology seemed to be the main prognostic factor in our study, since intestinal type of EGC was associated to a significantly better prognosis. Total gastrectomy is indicated in the proximal localization of EGC, and should perhaps be performed also in cases presenting undifferentiated histology. 相似文献
10.
Nawf Sharief Judith E. Kingston Vanessa M. Wright Kate Costeloe 《Pediatric hematology and oncology》1991,8(4):323-327
We describe a familial case of Marfan's syndrome with associated intrathoracic stomach detected during the neonatal period. The patient developed a primitive leukemia at 3 months of age. Acute leukemia in a patient with Marfan's syndrome has not previously been reported. 相似文献