全文获取类型
收费全文 | 8884篇 |
免费 | 483篇 |
国内免费 | 48篇 |
专业分类
耳鼻咽喉 | 142篇 |
儿科学 | 302篇 |
妇产科学 | 449篇 |
基础医学 | 869篇 |
口腔科学 | 336篇 |
临床医学 | 708篇 |
内科学 | 1688篇 |
皮肤病学 | 114篇 |
神经病学 | 458篇 |
特种医学 | 297篇 |
外国民族医学 | 7篇 |
外科学 | 1632篇 |
综合类 | 284篇 |
一般理论 | 4篇 |
预防医学 | 632篇 |
眼科学 | 232篇 |
药学 | 765篇 |
中国医学 | 71篇 |
肿瘤学 | 425篇 |
出版年
2023年 | 80篇 |
2022年 | 206篇 |
2021年 | 312篇 |
2020年 | 198篇 |
2019年 | 277篇 |
2018年 | 345篇 |
2017年 | 210篇 |
2016年 | 246篇 |
2015年 | 270篇 |
2014年 | 357篇 |
2013年 | 452篇 |
2012年 | 680篇 |
2011年 | 672篇 |
2010年 | 406篇 |
2009年 | 338篇 |
2008年 | 482篇 |
2007年 | 533篇 |
2006年 | 501篇 |
2005年 | 472篇 |
2004年 | 367篇 |
2003年 | 364篇 |
2002年 | 281篇 |
2001年 | 129篇 |
2000年 | 114篇 |
1999年 | 102篇 |
1998年 | 62篇 |
1997年 | 41篇 |
1996年 | 48篇 |
1995年 | 31篇 |
1994年 | 37篇 |
1993年 | 29篇 |
1992年 | 64篇 |
1991年 | 63篇 |
1990年 | 58篇 |
1989年 | 58篇 |
1988年 | 48篇 |
1987年 | 60篇 |
1986年 | 38篇 |
1985年 | 28篇 |
1984年 | 30篇 |
1983年 | 31篇 |
1982年 | 20篇 |
1980年 | 18篇 |
1978年 | 18篇 |
1977年 | 22篇 |
1974年 | 20篇 |
1973年 | 23篇 |
1972年 | 20篇 |
1970年 | 18篇 |
1969年 | 21篇 |
排序方式: 共有9415条查询结果,搜索用时 78 毫秒
1.
Hawwam Soha Abdalla Ismail Mayada El-Attar Yasmina Ahmed 《Lasers in medical science》2022,37(4):2193-2201
Lasers in Medical Science - Melasma is a chronic, dark brown–pigmented patches and macules commonly on the face. Many treatment modalities for melasma have been used as hydroquinone, laser... 相似文献
2.
3.
Siti Nurhuda Sharudin Mohamad Fathi Ismail Suresh Kumar Vasudevan 《Neuro-ophthalmology (Aeolus Press)》2019,43(2):102-106
The rise in popularity of hyaluronic acid (HA) dermal filler injection has caused an exceptional increase in the number of cases of reported irreversible blindness. Here, we reported a case of ischemic optic neuropathy and ophthalmoplegia following subcutaneous HA filler injection with complete visual recovery. A 31-year-old Chinese woman presented with sudden onset of right monocular visual impairment associated with diplopia. Patient had received a hyaluronic acid-containing ?ller injection for nasal dorsum augmentation twelve hours prior to presentation. Visual acuity of the right eye was counting finger. A right relative afferent pupillary defect was demonstrated with ophthalmoplegia. Humphrey visual field test disclosed a right inferior altitudinal field defect with impairment of colour vision. Computed tomography of the orbit revealed mild enlargement of the right medial and inferior recti muscles. Our patient showed a tremendous improvement of vision after a subcutaneous hyaluronidase injection with complete visual recovery within 2 weeks. 相似文献
4.
5.
Alper Kurtoglu Alauddin Kochai Mustafa Erkan Inanmaz Erhan Sukur Dogan Keskin Mehmet Türker Mustafa Uysal Zafer Sen Ismail Daldal 《Medicine》2021,100(13)
Different methods have been used throughout the years for syndesmotic injury but there is no consensus on the ideal treatment. Some methods are expensive and some have more complications. The aim of this study is to compare single suture endobutton with double suture endobutton and screw fixation for syndesmotic injury.Sixty nine patients with syndesmotic injury with fibular fractures whom were treated with a single interosseous suture endobutton system (ZipTightTM, Zimmer Biomet), a double interosseous suture endobutton system (ZipTightTM, Zimmer Biomet) and 1 syndesmotic screw (TST, Istanbul, Turkey) were included in this study. Functional and radiological results from patient records between 2015 and 2018 were retrospectively evaluated.Twenty patients were treated with the double interosseous suture endobutton, 23 were treated with the single interosseous suture endobutton, and 26 were treated with traditional AO screw fixation. Three patients from the screw fixation group (11.5%) required revision surgery (P < .05). All the radiologic and clinical outcomes were statistical similar in all 3 groups.Our findings showed that the interosseous suture endobutton system is at least as safe as the screw fixation technique for treatment of syndesmosis joint injuries and can be used as an alternative to the screw method. The interosseous suture endobutton system eliminates the need for a second surgery to remove the hardware, which minimizes the probability of re-diastasis. Since our results showed no statistical difference between single and double interosseous suture endobutton systems, the less costly single endobutton system may be the better alternative. 相似文献
6.
Afsaneh Amouei Mahmood Moosazadeh Tooran Nayeri chegeni Shahabeddin Sarvi Azadeh Mizani Mehdi Pourasghar Saeed Hosseini Teshnizi Zahra Hosseininejad Samira Dodangeh Abdolsattar Pagheh Amir Hossein Pourmand Ahmad Daryani 《Transboundary and Emerging Diseases》2020,67(5):1847-1860
The World Health Organization has reported an annual global suicide rate of 14.5 per 100,000 people. On the other hand, it is estimated that approximately one‐third of the global population are infected with Toxoplasma gondii (T. gondii) parasite. It is widely assumed that microbial pathogens, such as T. gondii, are probably associated with affective and behavioural modulation. The present article aimed to assess the proposed role of toxoplasmosis in raising the risk of suicidal ideation (SI) and suicide attempts (SA) using the available epidemiological data. Seven major electronic databases and the Internet search engine Google were searched for all the studies published between the 1st of January 1950 and 31st of October 2019. The heterogeneity and the risk of bias within and across studies were assessed. Following data extraction, pooled odds ratios (ORs) with 95% confidence interval (CI) across studies were calculated using the random‐effects models. A total number of 9,696 articles were screened and 27 studies were regarded as eligible in our systematic review (SI with five papers and 22 papers on SA). A significant association was detected between antibodies against T. gondii with TA (ORs = 1.57; 95% confidence interval [CI] 1.23–2.00, p = .000). Exploration of the association between T. gondii and SA yielded a positive effect of seropositivity for IgG antibodies but not IgM. Despite the limited number of studies, a statistical association was detected between suicidal behaviours and infection with latent T. gondii. 相似文献
7.
Fereydoun DAVATCHI Mahmood AKBARIAN Farhad SHAHRAM Abdolhadi NADJI Farhad GHARIBDOOST Ahmad‐Reza JAMSHIDI 《International journal of rheumatic diseases》2006,9(1):60-63
Aim: To evaluate the overall effect of disease modifying anti‐rheumatic drug (DMARD) combination therapy in daily practice. Methods: In a retrospective study, 161 consecutive files of patients who attended regular follow‐up sessions, seen from 1998, were analysed. Their data were extracted at baseline, 6 months, 1, 2, 3, 4 and 5 years. American College of Rheumatology ACR70 criteria was chosen for the evaluation of the global result. DMARD combination was methotrexate (7.5–15 mg weekly) and chloroquine (150 mg daily), with low‐dose prednisolone (less than 10 mg daily). In cases of remission, methotrexate was gradually tapered, then prednisolone. Chloroquine was discontinued after 1 year if no recurrence occurred at low‐dose (150 mg every other day). In cases of recurrence at any stage, the treatment scheme was stepped back. Results: The data of 161 patients were analysed. One hundred and six were rheumatoid factor positive (RF+) (66%). ACR 70 for all patients at 6 months follow‐up was 72.5% (95% CI = 7.0); at 1 year, 75.8% (95% CI = 6.7); at 2 years, 72.2% (95% CI = 7.2); at 3 years, 78.9% (95% CI = 6.6); at 4 years, 78.4% (95% CI = 6.9); and at 5 years, 70.6% (95% CI = 8.5). Conclusion: The classical DMARD combination therapy, when used with adequate low‐dose prednisolone, gave an ACR70 response from 71–79%. The efficacy of the treatment did not fade over time. RF– patients did better than RF+ patients, but the difference was not statistically significant. 相似文献
8.
9.
K Mahmood M N Chowdhury E A Ayoola I A Mofleh R S Rashed F Z Faleh 《Tropical gastroenterology》1991,12(4):188-191
Seventy seven antral biopsies were collected from patients attending endoscopy clinic at King Khalid University Hospital, Riyadh, Saudi Arabia during a period of six months between December 1988 to May 1989. Of these 69 (89.6%) showed chronic gastritis as well as Helicobacter-like organisms (HLOs) in the biopsy specimens while 63 (81.8%) of biopsies grew Helicobacter pylori on culture. These findings indicate a good correlation between the histological diagnosis of chronic gastritis and isolation of H. pylori on culture. 相似文献
10.