全文获取类型
收费全文 | 184603篇 |
免费 | 1369篇 |
国内免费 | 95篇 |
专业分类
耳鼻咽喉 | 1463篇 |
儿科学 | 7078篇 |
妇产科学 | 3448篇 |
基础医学 | 17093篇 |
口腔科学 | 1936篇 |
临床医学 | 13046篇 |
内科学 | 32765篇 |
皮肤病学 | 872篇 |
神经病学 | 17123篇 |
特种医学 | 9247篇 |
外科学 | 30840篇 |
综合类 | 2471篇 |
一般理论 | 4篇 |
预防医学 | 18415篇 |
眼科学 | 3191篇 |
药学 | 9811篇 |
中国医学 | 649篇 |
肿瘤学 | 16615篇 |
出版年
2023年 | 53篇 |
2022年 | 165篇 |
2021年 | 254篇 |
2020年 | 150篇 |
2019年 | 257篇 |
2018年 | 22156篇 |
2017年 | 17547篇 |
2016年 | 19793篇 |
2015年 | 1337篇 |
2014年 | 1283篇 |
2013年 | 1349篇 |
2012年 | 7659篇 |
2011年 | 21717篇 |
2010年 | 19241篇 |
2009年 | 11871篇 |
2008年 | 20169篇 |
2007年 | 22367篇 |
2006年 | 1264篇 |
2005年 | 2824篇 |
2004年 | 3924篇 |
2003年 | 4749篇 |
2002年 | 2829篇 |
2001年 | 350篇 |
2000年 | 465篇 |
1999年 | 218篇 |
1998年 | 230篇 |
1997年 | 224篇 |
1996年 | 109篇 |
1995年 | 117篇 |
1994年 | 113篇 |
1993年 | 71篇 |
1992年 | 52篇 |
1991年 | 103篇 |
1990年 | 140篇 |
1989年 | 88篇 |
1988年 | 68篇 |
1987年 | 50篇 |
1986年 | 35篇 |
1985年 | 44篇 |
1984年 | 26篇 |
1983年 | 34篇 |
1982年 | 25篇 |
1980年 | 41篇 |
1974年 | 27篇 |
1969年 | 29篇 |
1938年 | 60篇 |
1937年 | 25篇 |
1934年 | 30篇 |
1932年 | 56篇 |
1930年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
61.
62.
63.
Najat MA Farsi 《BMC oral health》2007,7(1):15
Background
This study aimed to investigate the signs of oral dryness in relation to different salivary variables and to correlate subjective complaints of oral dryness with salivary flow rate. 相似文献64.
Introduction Hypothalamic hamartomas are congenital malformations. Clinically, they can be asymptomatic, but they cause seizures, mental
retardation and precocious puberty in many cases.
Case report A 20-day-old boy with hypothalamic hamartoma and bilateral anophthalmia was presented. Except those, no other congenital anomaly
was detected.
Conclusion This is a rare case of hypothalamic hamartoma with bilateral anophthalmia. The mutations at SOX2 has an important role in
the developing brain and eyes. 相似文献
65.
Introduction Suprasellar arachnoid cysts are uncommon developmental anomalies that are most often diagnosed in childhood. Because the natural history and pathogenesis of these remain poorly defined, optimal treatment guidelines are not yet established.Case report We report a case of spontaneous disappearance of a suprasellar arachnoid cyst that persisted after a ventriculoperitoneal shunt performed 10 years earlier. A 5-year-old boy presented with impaired visual acuity and urinary incontinence. Magnetic resonance (MR) imaging showed a large suprasellar cyst with noncommunicating hydrocephalus. A ventriculoperitoneal shunt was put in place to alleviate current aggravation of hydrocephalus symptoms. Because of the persistent size of the cyst and signs of brainstem compression on a repeat computed tomography (CT), we recommended surgical exploration and decompression. However, the boy’s parents declined any further surgical treatment, and the patient was subsequently lost to follow-up for 10 years. When the patient returned to our clinic at the age of 15 years, a repeat MR scan showed a complete disappearance of the cyst. His family denied any significant interval history.Discussion This case represents only the third reported case of spontaneous disappearance of a suprasellar arachnoid cyst. We discuss possible mechanisms and clinical characteristics of the disappearance of the arachnoid cyst with review of the literature. 相似文献
66.
67.
Mesut Akarsu Murat Meral Sakine Bahceli Dilek Solmaz Hasan Kayahan Mujde Soyturk Hale Akpinar 《Digestive endoscopy》2007,19(1):49-51
Fascioliasis is a worldwide zoonotic infection with fasciola hepatica and fasciola gigantica. The zoonoses are particularly endemic in sheep‐raising countries and are also endemic in Turkey. Clinical features of fascioliasis relate to the stage and intensity of infection. Fasciola hepatica infection comprises two stages: hepatic and biliary, with different signs and symptoms. Cholestatic symptoms may be sudden, but, in some cases, they may be preceded by a long period of fever, eosinophilia and vague gastrointestinal symptoms. We reported a case with fever and upper‐quadrant abdominal pain since 3 months that comes from an area endemic for fasciola hepatica, with suspected imaging about fasciola hepatica in common bile duct on ultrasonography. After that, fasciola hepatica was extracted with endoscopic retrograde cholangiography. 相似文献
68.
69.
70.