全文获取类型
收费全文 | 16943篇 |
免费 | 824篇 |
国内免费 | 85篇 |
专业分类
耳鼻咽喉 | 161篇 |
儿科学 | 280篇 |
妇产科学 | 307篇 |
基础医学 | 2228篇 |
口腔科学 | 380篇 |
临床医学 | 1066篇 |
内科学 | 4325篇 |
皮肤病学 | 334篇 |
神经病学 | 1235篇 |
特种医学 | 828篇 |
外科学 | 2931篇 |
综合类 | 43篇 |
一般理论 | 2篇 |
预防医学 | 349篇 |
眼科学 | 249篇 |
药学 | 1015篇 |
中国医学 | 24篇 |
肿瘤学 | 2095篇 |
出版年
2023年 | 101篇 |
2022年 | 88篇 |
2021年 | 428篇 |
2020年 | 233篇 |
2019年 | 299篇 |
2018年 | 344篇 |
2017年 | 291篇 |
2016年 | 342篇 |
2015年 | 365篇 |
2014年 | 470篇 |
2013年 | 585篇 |
2012年 | 1018篇 |
2011年 | 1077篇 |
2010年 | 616篇 |
2009年 | 492篇 |
2008年 | 923篇 |
2007年 | 947篇 |
2006年 | 913篇 |
2005年 | 895篇 |
2004年 | 852篇 |
2003年 | 869篇 |
2002年 | 860篇 |
2001年 | 394篇 |
2000年 | 458篇 |
1999年 | 330篇 |
1998年 | 183篇 |
1997年 | 136篇 |
1996年 | 105篇 |
1995年 | 123篇 |
1994年 | 117篇 |
1993年 | 96篇 |
1992年 | 248篇 |
1991年 | 265篇 |
1990年 | 221篇 |
1989年 | 265篇 |
1988年 | 227篇 |
1987年 | 216篇 |
1986年 | 200篇 |
1985年 | 164篇 |
1984年 | 111篇 |
1983年 | 87篇 |
1982年 | 59篇 |
1979年 | 86篇 |
1978年 | 73篇 |
1977年 | 61篇 |
1975年 | 52篇 |
1974年 | 51篇 |
1972年 | 60篇 |
1971年 | 58篇 |
1968年 | 52篇 |
排序方式: 共有10000条查询结果,搜索用时 24 毫秒
1.
2.
3.
Takahiro Namiki Chika Takano Ryoji Aoki Quang Duy Trinh Ichiro Morioka Satoshi Hayakawa 《Congenital anomalies》2022,62(1):38-41
Congenital rubella syndrome (CRS) results from maternal rubella virus infection in early pregnancy. Abnormal neuroimaging findings have been analyzed in a small number of CRS patients in the past; however, their clinical significance has been poorly addressed. Therefore, we have investigated the neuroimaging findings of 31 patients with CRS from previous studies. The most common finding was parenchymal calcification, which was observed in 18 of 31 patients (58.1%). A multivariable logistic regression model showed that it was associated with psychomotor or mental retardation (p = 0.018), suggesting that parenchymal calcification in CRS could be a prognostic factor. 相似文献
4.
5.
6.
7.
8.
Lesley A. Inker Morgan E. Grams Andrew S. Levey Josef Coresh Massimo Cirillo John F. Collins Ron T. Gansevoort Orlando M. Gutierrez Takayuki Hamano Gunnar H. Heine Shizukiyo Ishikawa Sun Ha Jee Florian Kronenberg Martin J. Landray Katsuyuki Miura Girish N. Nadkarni Carmen A. Peralta Dietrich Rothenbacher Mark Woodward 《American journal of kidney diseases》2019,73(2):206-217
9.
Kosuke Yoshihara Takayuki Enomoto Daisuke Aoki Yoh Watanabe Junzo Kigawa Nobuhiro Takeshima Hyoe Inomata Kana Hattori Masahisa Jinushi Hitoshi Tsuda Toru Sugiyama 《Cancer science》2020,111(9):3350-3358
Whether germline (g) breast cancer susceptibility gene (BRCA) mutations are located within or outside the ovarian cancer cluster region (OCCR) (1380‐4062 bp for gBRCA1, and between 3249‐5681 bp and 6645‐7471 bp for gBRCA2) may influence risk variations for ovarian cancers. This ad hoc analysis of the CHARLOTTE epidemiological study in Japan assessed the distribution of gBRCA1/2 mutations in patients with newly diagnosed ovarian cancer, and investigated an association between gBRCA1/2 mutation locations and ovarian cancer risk. Differences in patient background and clinical characteristics in subgroups stratified by gBRCA1/2 mutation locations were also evaluated. We analyzed the data of 93 patients (14.7%) from the CHARLOTTE study who were positive for gBRCA1/2 mutations. After excluding 16 cases with L63X founder mutation, 28 (65.1%) of gBRCA1 mutations were within the OCCR. Of 30 gBRCA2 mutations, 15 (50.0%) were within the OCCR. Of 27 patients (one patient excluded for unknown family history) with gBRCA1 mutations located in the OCCR, 11 (40.7%) had a family history of ovarian cancer; the proportion of patients with a family history of ovarian cancer and gBRCA1 mutations outside the OCCR was lower (13.3%). Sixty percent of patients with gBRCA1 mutations outside the OCCR had a family history of breast cancer; the proportion of patients with a family history of breast cancer and gBRCA1 mutations within the OCCR was relatively lower (33.3%). Understanding the mutation locations may contribute to more accurate risk assessments of susceptible individuals and early detection of ovarian cancer among gBRCA mutation carriers. 相似文献