全文获取类型
收费全文 | 22560篇 |
免费 | 6036篇 |
国内免费 | 132篇 |
专业分类
耳鼻咽喉 | 633篇 |
儿科学 | 664篇 |
妇产科学 | 750篇 |
基础医学 | 542篇 |
口腔科学 | 2670篇 |
临床医学 | 4296篇 |
内科学 | 5406篇 |
皮肤病学 | 473篇 |
神经病学 | 1972篇 |
特种医学 | 1108篇 |
外科学 | 4027篇 |
综合类 | 57篇 |
现状与发展 | 12篇 |
预防医学 | 2788篇 |
眼科学 | 336篇 |
药学 | 305篇 |
中国医学 | 7篇 |
肿瘤学 | 2682篇 |
出版年
2024年 | 136篇 |
2023年 | 1100篇 |
2022年 | 372篇 |
2021年 | 680篇 |
2020年 | 1231篇 |
2019年 | 511篇 |
2018年 | 1369篇 |
2017年 | 1321篇 |
2016年 | 1528篇 |
2015年 | 1598篇 |
2014年 | 2024篇 |
2013年 | 2451篇 |
2012年 | 850篇 |
2011年 | 809篇 |
2010年 | 1428篇 |
2009年 | 2009篇 |
2008年 | 817篇 |
2007年 | 567篇 |
2006年 | 739篇 |
2005年 | 536篇 |
2004年 | 393篇 |
2003年 | 345篇 |
2002年 | 313篇 |
2001年 | 439篇 |
2000年 | 321篇 |
1999年 | 414篇 |
1998年 | 509篇 |
1997年 | 494篇 |
1996年 | 539篇 |
1995年 | 400篇 |
1994年 | 314篇 |
1993年 | 265篇 |
1992年 | 197篇 |
1991年 | 189篇 |
1990年 | 161篇 |
1989年 | 165篇 |
1988年 | 132篇 |
1987年 | 137篇 |
1986年 | 109篇 |
1985年 | 107篇 |
1984年 | 83篇 |
1983年 | 93篇 |
1982年 | 86篇 |
1981年 | 70篇 |
1980年 | 50篇 |
1979年 | 46篇 |
1978年 | 37篇 |
1977年 | 49篇 |
1976年 | 33篇 |
1974年 | 31篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
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
4.
Maaike van Gerwen MD Naomi Alpert MS Raja Flores MD Emanuela Taioli MD PhD 《American journal of industrial medicine》2020,63(2):115-120
The association between asbestos exposure, mainly in occupational settings, and malignant mesothelioma has been well established; this has prompted several countries to establish mesothelioma epidemiologic surveillance programs often at the request of national agencies. This review compares currently existing mesothelioma registries worldwide to develop a concept model for a US real-time case capture mesothelioma registry. Five countries were identified with a mesothelioma specific registry, including Italy, France, UK, Australia, and South Korea. All, except the UK, used interviews to collect exposure data. Linkage with the national death index was available or was in future plans for all registries. The registries have limited information on treatment, quality of life, and other patient-centered outcomes such as symptoms and pain management. To thoroughly collect exposure data, “real-time” enrollment is preferable; to maximize the capture of mesothelioma cases, optimal coverage, and a simplified consent process are needed. 相似文献
5.
Chie Teramoto PHN RN MS Satoko Nagata PhD PHN RN Reiko Okamoto PhD PHN RN Ruriko Suzuki PHN RN MS Emiko Kishi PhD PHN RN Michie Nomura DSN PHN RN Noriko Jojima PHN RN MS Masumi Nishida PhD PHN RN Keiko Koide PhD PHN RN Emiko Kusano PhD PHN RN Saori Iwamoto PhD PHN RN Sachiyo Murashima PhD PHN RN 《Public health nursing (Boston, Mass.)》2015,32(6):654-661
6.
7.
8.
Oliver Sartor MD Daniel Heinrich MD Neil Mariados MD Maria José Méndez Vidal MD Daniel Keizman MD Camilla Thellenberg Karlsson MD Avivit Peer MD Giuseppe Procopio MD Stephen J. Frank MD Kalevi Pulkkanen MD Eli Rosenbaum MD Stefano Severi MD José Trigo MD Lucia Trandafir MD Volker Wagner MD Rui Li MS Luke T. Nordquist MD 《The Prostate》2019,79(14):1683-1691
9.
10.