全文获取类型
收费全文 | 107539篇 |
免费 | 6456篇 |
国内免费 | 639篇 |
专业分类
耳鼻咽喉 | 1100篇 |
儿科学 | 3518篇 |
妇产科学 | 2477篇 |
基础医学 | 15549篇 |
口腔科学 | 3943篇 |
临床医学 | 9750篇 |
内科学 | 24171篇 |
皮肤病学 | 2766篇 |
神经病学 | 10525篇 |
特种医学 | 2553篇 |
外国民族医学 | 1篇 |
外科学 | 9698篇 |
综合类 | 398篇 |
一般理论 | 49篇 |
预防医学 | 10701篇 |
眼科学 | 1776篇 |
药学 | 7543篇 |
中国医学 | 423篇 |
肿瘤学 | 7693篇 |
出版年
2024年 | 85篇 |
2023年 | 961篇 |
2022年 | 1800篇 |
2021年 | 3661篇 |
2020年 | 2308篇 |
2019年 | 3107篇 |
2018年 | 3527篇 |
2017年 | 2691篇 |
2016年 | 3124篇 |
2015年 | 3456篇 |
2014年 | 4540篇 |
2013年 | 5939篇 |
2012年 | 9009篇 |
2011年 | 9366篇 |
2010年 | 5100篇 |
2009年 | 4321篇 |
2008年 | 7428篇 |
2007年 | 7454篇 |
2006年 | 6850篇 |
2005年 | 6400篇 |
2004年 | 5753篇 |
2003年 | 5129篇 |
2002年 | 4618篇 |
2001年 | 601篇 |
2000年 | 437篇 |
1999年 | 624篇 |
1998年 | 807篇 |
1997年 | 657篇 |
1996年 | 554篇 |
1995年 | 455篇 |
1994年 | 433篇 |
1993年 | 358篇 |
1992年 | 304篇 |
1991年 | 219篇 |
1990年 | 216篇 |
1989年 | 204篇 |
1988年 | 191篇 |
1987年 | 167篇 |
1986年 | 187篇 |
1985年 | 138篇 |
1984年 | 148篇 |
1983年 | 145篇 |
1982年 | 160篇 |
1981年 | 119篇 |
1980年 | 130篇 |
1979年 | 79篇 |
1978年 | 85篇 |
1977年 | 74篇 |
1976年 | 61篇 |
1974年 | 52篇 |
排序方式: 共有10000条查询结果,搜索用时 890 毫秒
11.
Quality of life in stroke survivor–caregiver dyads: a new conceptual framework and longitudinal study protocol 下载免费PDF全文
12.
13.
14.
Michelle E. Wilson Charles Kim Jacqueline Carrasco 《Orbit (Amsterdam, Netherlands)》2016,35(5):288-291
A 48-year-old smoker with a history of hyperthyroidism treated 10 years prior to presentation with radioactive iodine ablation of the thyroid gland presented to his ophthalmologist with a 2-week history of transient loss of vision in the right eye occurring for 1 to 2 hours each morning. He denied ocular pain, diplopia or change in the prominence of one or both eyes. Examination revealed 2 mm of relative proptosis on the right, bilateral temporal flare and lower lid retraction. There was minimal upper lid retraction and no evidence of lid lag. Ocular motility was full. Dilated fundoscopic examination revealed bilateral optic nerve edema, right more than left. CT of the orbit demonstrated enlargement of the extraocular muscles bilaterally with marked enlargement of the right medial rectus and left inferior rectus muscles resulting in crowding at the orbital apex bilaterally. Laboratory testing revealed the patient to be hyperthyroid. The patient was treated with high dose oral steroids followed by orbital radiation. Hyperthyroidism was managed by the patient’s primary care physician. Visual symptoms rapidly improved with oral steroids and orbital radiation. Optic nerve edema completely resolved. Repeat CT imaging demonstrated a reduction in the enlargement of the extraocular muscles with relief of bilateral optic nerve compression. 相似文献
15.
16.
Alejandra Gordillo Hernández Eduardo Dominguez-Adame Lanuza Auxiliadora Cano Matias Rosario Perez Huertas Katherine Maria Gallardo Rodriguez Purificacion Gallinato Perez Fernando Oliva Mompean 《World journal of gastrointestinal surgery》2015,7(8):170-173
Gangliocytic paragangliomas are rare tumors that almost exclusively occur within the second portion of the duodenum. Although these tumors generally have a benign clinical course, they have the potential to recur or metastasize to regional lymph nodes. The case report presented here describes a 57-year-old female patient with melena, progressive asthenia, anemia, and a mass in the second-third portion of the duodenum that was treated by local excision. The patient was diagnosed with a friable bleeding tumor. The histologic analysis showed that the tumor was a 4 cm gangliocytic paraganglioma without a malignant cell pattern. In the absence of local invasion or distant metastasis, endoscopic resection represents a feasible, curative therapy. Although endoscopic polypectomy is currently considered the treatment of choice, it is not recommended if the size of the tumor is > 3 cm and/or there is active or recent bleeding. Patients diagnosed with a gangliocytic paraganglioma should be closely followed-up for possible local recurrence. 相似文献
17.
18.
19.
20.