全文获取类型
收费全文 | 19130篇 |
免费 | 857篇 |
国内免费 | 88篇 |
专业分类
耳鼻咽喉 | 185篇 |
儿科学 | 329篇 |
妇产科学 | 392篇 |
基础医学 | 2569篇 |
口腔科学 | 358篇 |
临床医学 | 1150篇 |
内科学 | 4524篇 |
皮肤病学 | 272篇 |
神经病学 | 1800篇 |
特种医学 | 788篇 |
外科学 | 3025篇 |
综合类 | 78篇 |
一般理论 | 5篇 |
预防医学 | 610篇 |
眼科学 | 385篇 |
药学 | 1198篇 |
中国医学 | 21篇 |
肿瘤学 | 2386篇 |
出版年
2021年 | 265篇 |
2020年 | 169篇 |
2019年 | 230篇 |
2018年 | 288篇 |
2017年 | 242篇 |
2016年 | 264篇 |
2015年 | 296篇 |
2014年 | 378篇 |
2013年 | 498篇 |
2012年 | 819篇 |
2011年 | 828篇 |
2010年 | 449篇 |
2009年 | 409篇 |
2008年 | 699篇 |
2007年 | 826篇 |
2006年 | 794篇 |
2005年 | 752篇 |
2004年 | 733篇 |
2003年 | 739篇 |
2002年 | 812篇 |
2001年 | 651篇 |
2000年 | 719篇 |
1999年 | 650篇 |
1998年 | 224篇 |
1997年 | 173篇 |
1996年 | 179篇 |
1995年 | 185篇 |
1994年 | 186篇 |
1993年 | 171篇 |
1992年 | 625篇 |
1991年 | 546篇 |
1990年 | 540篇 |
1989年 | 553篇 |
1988年 | 494篇 |
1987年 | 479篇 |
1986年 | 431篇 |
1985年 | 436篇 |
1984年 | 244篇 |
1983年 | 205篇 |
1982年 | 89篇 |
1979年 | 229篇 |
1978年 | 125篇 |
1977年 | 99篇 |
1975年 | 98篇 |
1974年 | 96篇 |
1973年 | 97篇 |
1972年 | 88篇 |
1970年 | 100篇 |
1969年 | 114篇 |
1968年 | 94篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
1.
Harada Hideyuki Omori Shota Mori Keita Konno Masahiro Murakami Haruyasu Imagumbai Toshiyuki Fukuda Haruyuki Nakamatsu Kiyoshi Kimura Tomoki Tanabe Hiroaki Fujita Hideki Tatebe Hitoshi Fujitaka Kazunori Nishimura Yasumasa 《International journal of clinical oncology / Japan Society of Clinical Oncology》2022,27(6):1025-1033
International Journal of Clinical Oncology - This multi-institutional clinical trial evaluated the feasibility of intensity-modulated radiotherapy (IMRT) for patients with locally advanced... 相似文献
2.
3.
4.
Masaru Sasaki Tsuyoshi Takahashi Soichiro Funaki Koji Tanaka Yasuhiro Miyazaki Naoko Ose Tomoki Makino Yukinori Kurokawa Makoto Yamasaki Kiyokazu Nakajima Yasushi Shintani Masaki Mori Yuichiro Doki 《Asian journal of endoscopic surgery》2021,14(1):116-119
We report a case of a diaphragmatic hernia after a heart transplant operation. A 43-year-old woman, who underwent orthotropic heart transplantation for hypertrophic cadiomyopathy two year earlier, presented with vomiting and epigastric pain. A computed tomography scan showed that the stomach and transverse colon were dislocated in the left thoracic cavity. We diagnosed left diaphragmatic hernia incarceration and performed laparoscopic repair of the diaphragmatic hernia. A 12 × 8 cm diaphragmatic defect was found intraoperatively on the ventrolateral aspect of the left diaphragm, and the stomach with volvulus had herniated into the thorax through the defect. The hernia was considered to be iatrogenic. The diaphragmatic defect was large, and the diaphragm was thinning. We closed the defect by mesh repair. Laparoscopic mesh repair of the diaphragmatic hernia could be performed safely and with minimal invasiveness. 相似文献
5.
6.
Akihisa Okumura Harushi Mori Pin Fee Chong Ryutaro Kira Hiroyuki Torisu Sawa Yasumoto Hiroyuki Shimizu Tsuguto Fujimoto Keiko Tanaka-Taya 《Brain & development》2019,41(5):443-451
Objecive
To clarify the neuroimaging findings of children with acute flaccid myelitis during an outbreak of EV-D68 infection.Methods
We performed a detailed review of the spinal and cranial MRI results of 54 children with acute flaccid myelitis. We focused on the range of longitudinal lesions, the localization and appearance of lesions within a horizontal section, Gadolinium-enhancement, and changes over time.Results
All children had longitudinal spinal lesions involving central gray matter. Twenty-six children had lesions spanning the entire spine. Six of them had weakness in all limbs, whereas seven had weakness of only one limb. Thirty-eight children had lesions in both gray and white matter and limb weakness tended to be more severe in these children. During the acute period, spinal lesions showed bilateral ill-defined widespread T2 hyperintensity. During the subacute period, lesions were well defined and confined to the anterior horn. The distribution of limb weakness was correlated with the appearance of lesions during the subacute period. Gadolinium enhancement was performed in 37 children, and enhancement was seen in the cauda equina in 29 children. Enhancement was infrequent within 2?days after onset but was seen in almost all children thereafter. Twenty-two children had brainstem lesions continuous with spinal lesions.Conclusion
Extensive longitudinal spinal lesions were characteristic in children with acute flaccid myelitis. Lesions were usually bilateral and widespread during the acute period, whereas localization to the anterior horn could become obvious. Although enhancement of the cauda equina was often observed, its appearance was sometimes delayed. 相似文献7.
8.
Hideki Kobara Hirohito Mori Noriko Nishiyama Shintaro Fujihara Keiichi Okano Yasuyuki Suzuki Tsutomu Masaki 《Journal of gastroenterology and hepatology》2019,34(1):22-30
Rescue therapy for gastrointestinal (GI) refractory bleeding, perforation, and fistula has traditionally required surgical interventions owing to the limited performance of conventional endoscopic instruments and techniques. An innovative clipping system, the over‐the‐scope clip (OTSC), may play an important role in rescue therapy. This innovative device is proposed as the final option in endoscopic treatment. The device presents several advantages including having a powerful sewing force for closure of GI defects using a simple mechanism and also having an innovative feature, whereby a large defect and fistula can be sealed using accessory forceps. Consequently, it is able to provide outstanding clinical effects for rescue therapy. This review clarifies the current status and limitations of OTSC according to different indications of GI refractory disease, including refractory bleeding, perforation, fistula, and anastomotic dehiscence. An extensive literature search identified studies reported 10 or more cases in which the OTSC system was applied. A total of 1517 cases described in 30 articles between 2010 and 2018 were retrieved. The clinical success rates and complications were calculated overall and for each indication. The average clinical success rate was 78% (n = 1517) overall, 85% for bleeding (n = 559), 85% (n = 351) for perforation, 52% (n = 388) for fistula, 66% (n = 97) for anastomotic dehiscence, and 95% (n = 122) for other conditions, respectively. The overall and severe OTSC‐associated complications were 1.7% (n = 23) and 0.59% (n = 9), respectively. This review concludes that the OTSC system may serve as a safe and productive device for GI refractory diseases, albeit with limited success for fistula. 相似文献
9.
10.
Takehiko Mori Souichi Shiratori Junji Suzumiya Mineo Kurokawa Motohiro Shindo Uchida Naoyuki Takenaka Katsuto Toshihiro Miyamoto Satoshi Morishige Makoto Hirokawa Takahiro Fukuda Yoshiko Atsuta Ritsuro Suzuki 《Hematological oncology》2020,38(3):266-271
Although allogeneic hematopoietic stem cell transplantation (HSCT) has been reported to provide prolonged remission of relapsed/refractory mycosis fungoides (MF) and Sézary syndrome (SS), its role has not been fully evaluated. Here, the outcomes of allogeneic HSCT for patients with MF/SS were retrospectively evaluated by using the registry database of the Japan Society for Hematopoietic Cell Transplantation. Forty-eight patients were evaluable and enrolled in the analysis. Median age was 45.5 years. Eighteen patients (38%) received myeloablative conditioning, and 33 (69%) received HSCT from an alternative donor. Disease status was complete or partial response in 25% of the patients and relapsed or refractory in the others. At the time of analysis, 18 patients were alive, with a median follow-up of 31.0 months (range, 3.8-31.1). Three-year overall survival (OS) and progression-free survival (PFS) were 30% (95%CI, 16-45%) and 19% (95%CI, 9-31%), respectively. Disease progression was not observed later than 17 months after transplantation. Both disease status and performance status at transplant significantly affected OS and PFS. Although our findings suggest that allogeneic HSCT provides long-term PFS in patients with MF/SS, the timing of transplantation should be decided carefully based on the disease status and the patient's condition in order to improve the outcome. 相似文献