全文获取类型
收费全文 | 31852篇 |
免费 | 2284篇 |
国内免费 | 314篇 |
专业分类
耳鼻咽喉 | 534篇 |
儿科学 | 500篇 |
妇产科学 | 545篇 |
基础医学 | 4597篇 |
口腔科学 | 618篇 |
临床医学 | 2804篇 |
内科学 | 6594篇 |
皮肤病学 | 993篇 |
神经病学 | 2309篇 |
特种医学 | 2062篇 |
外科学 | 4311篇 |
综合类 | 834篇 |
现状与发展 | 1篇 |
一般理论 | 26篇 |
预防医学 | 1319篇 |
眼科学 | 992篇 |
药学 | 2553篇 |
中国医学 | 304篇 |
肿瘤学 | 2554篇 |
出版年
2023年 | 231篇 |
2022年 | 135篇 |
2021年 | 938篇 |
2020年 | 642篇 |
2019年 | 846篇 |
2018年 | 1096篇 |
2017年 | 801篇 |
2016年 | 1104篇 |
2015年 | 1469篇 |
2014年 | 1746篇 |
2013年 | 1837篇 |
2012年 | 2818篇 |
2011年 | 2754篇 |
2010年 | 1660篇 |
2009年 | 1414篇 |
2008年 | 1902篇 |
2007年 | 1902篇 |
2006年 | 1809篇 |
2005年 | 1678篇 |
2004年 | 1337篇 |
2003年 | 1105篇 |
2002年 | 942篇 |
2001年 | 590篇 |
2000年 | 569篇 |
1999年 | 444篇 |
1998年 | 168篇 |
1997年 | 132篇 |
1996年 | 109篇 |
1995年 | 115篇 |
1994年 | 105篇 |
1993年 | 86篇 |
1992年 | 172篇 |
1991年 | 196篇 |
1990年 | 151篇 |
1989年 | 139篇 |
1988年 | 128篇 |
1987年 | 142篇 |
1986年 | 123篇 |
1985年 | 99篇 |
1984年 | 75篇 |
1983年 | 87篇 |
1982年 | 50篇 |
1979年 | 64篇 |
1977年 | 41篇 |
1975年 | 39篇 |
1974年 | 41篇 |
1973年 | 41篇 |
1972年 | 45篇 |
1971年 | 41篇 |
1969年 | 43篇 |
排序方式: 共有10000条查询结果,搜索用时 41 毫秒
1.
2.
3.
4.
5.
Kyung-Suk Suh Suk Kyun Hong Sola Lee Su young Hong Sanggyun Suh Eui Soo Han Seong-Mi Yang YoungRok Choi Nam-Joon Yi Kwang-Woong Lee 《American journal of transplantation》2022,22(1):260-265
Minimally invasive approaches are increasingly being applied in surgeries and have recently been used in living donor hepatectomy. We have developed a safe and reproducible method for minimally invasive living donor liver transplantation, which consists of pure laparoscopic explant hepatectomy and pure laparoscopic implantation of the graft, which was inserted through a suprapubic incision. Pure laparoscopic explant hepatectomy without liver fragmentation was performed in a 60-year-old man with alcoholic liver cirrhosis and hepatocellular carcinoma. The explanted liver was retrieved through a suprapubic incision. A modified right liver graft, procured from his 24-year-old son using the pure laparoscopic method, was inserted through a suprapubic incision, and implantation was performed intracorporeally throughout the procedure. The time required to remove the liver was 369 min, and the total operative time was 960 min. No complications occurred during or after the surgery. The patient recovered well, and his hospital stay was of 11 days. Pure laparoscopic living donor liver transplantation from explant hepatectomy to implantation was performed successfully. It is a feasible procedure when performed by a highly experienced surgeon and transplantation team. Further studies with larger sample sizes are needed to confirm its safety and feasibility.
6.
7.
Won Sohn Yoosoo Chang Yong Kyun Cho Yun Soo Hong Hocheol Shin Seungho Ryu 《Journal of viral hepatitis》2022,29(1):69-77
The predictive role of noninvasive liver fibrosis scores on liver-related mortality in patients with chronic hepatitis B below 40 years of age remains unclarified. We examined the association of liver fibrosis scores with liver-related mortality in young (<40 years) and older adults with hepatitis B virus (HBV) infection. A cohort study was performed in 21,360 HBsAg-positive Korean adults without liver cirrhosis or liver cancer at baseline who were followed up for up to 18 years. The liver fibrosis scores were determined using the fibrosis-4 score (FIB-4) and aspartate transaminase to platelet ratio index (APRI). Patients’ vital status and cause of death were ascertained through the National Death Records. During a median follow-up of 10.2 years, 283 liver-related deaths were identified (liver-related mortality, 127.4/105 person-years). The liver fibrosis scores were significantly associated with increased risks of liver-related mortality; this association did not differ by age group (<40 vs. ≥40 years). The multivariable-adjusted hazard ratios with 95% confidence intervals for liver-related mortality comparing intermediate and high to low FIB-4 scores were 4.23 (1.99–9.00), and 15.16 (5.18–44.38), respectively, among individuals under 40, and 4.46 (3.03–6.56) and 22.47 (15.11–33.41), respectively, among older individuals. These associations were similar in analyses using APRI. In this cohort of HBsAg-positive individuals, the liver fibrosis scores were associated with increased risks of liver-related mortality in young and older adults. The liver fibrosis scores have a role in predicting liver mortality, even in young adults with HBV. 相似文献
8.
9.
10.
Francesco Esposito Chetana Lim Eylon Lahat Chaya Shwaartz Rony Eshkenazy Chady Salloum Daniel Azoulay 《HPB : the official journal of the International Hepato Pancreato Biliary Association》2019,21(9):1099-1106
BackgroundSome patients remain deemed unsuitable for resection after portal vein embolization (PVE) because of insufficient hypertrophy of the future remnant liver (FRL). Hepatic and portal vein embolization (HPVE) has been shown to induce hypertrophy of the FRL. The aim of this study was to provide a systematic review of the available literature on HPVE as preparation for major hepatectomy.MethodsThe literature search was performed on online databases. Studies including patients who underwent preoperative HPVE were retrieved for evaluation.ResultsSix articles including 68 patients were published between 2003 and 2017. HPVE was performed successfully in all patients with no mortality and morbidity-related procedures. The degree of hypertrophy of the FRL after HPVE ranged from 33% to 63.3%. Surgical resection after preoperative HPVE could be performed in 85.3% of patients, but 14.7% remained unsuitable for resection because of insufficient hypertrophy of the FRL or tumor progression. Posthepatectomy morbidity and mortality rates were 10.3% and 5.1%, respectively. The postoperative liver failure rate was nil.ConclusionHPVE as a preparation for major hepatectomy appears to be feasible and safe and could increase the resectability of patients initially deemed unsuitable for resection because of absent or insufficient hypertrophy of the FRL after PVE alone. 相似文献