全文获取类型
收费全文 | 905456篇 |
免费 | 74304篇 |
国内免费 | 2454篇 |
专业分类
耳鼻咽喉 | 13605篇 |
儿科学 | 25196篇 |
妇产科学 | 25747篇 |
基础医学 | 131585篇 |
口腔科学 | 26489篇 |
临床医学 | 78872篇 |
内科学 | 173202篇 |
皮肤病学 | 18621篇 |
神经病学 | 73395篇 |
特种医学 | 38151篇 |
外国民族医学 | 172篇 |
外科学 | 141661篇 |
综合类 | 24835篇 |
现状与发展 | 2篇 |
一般理论 | 273篇 |
预防医学 | 68758篇 |
眼科学 | 21517篇 |
药学 | 69084篇 |
中国医学 | 2214篇 |
肿瘤学 | 48835篇 |
出版年
2018年 | 8682篇 |
2016年 | 8189篇 |
2015年 | 10010篇 |
2014年 | 13732篇 |
2013年 | 19723篇 |
2012年 | 27083篇 |
2011年 | 28088篇 |
2010年 | 16397篇 |
2009年 | 15216篇 |
2008年 | 25465篇 |
2007年 | 27253篇 |
2006年 | 26789篇 |
2005年 | 26264篇 |
2004年 | 25343篇 |
2003年 | 24276篇 |
2002年 | 23165篇 |
2001年 | 36479篇 |
2000年 | 37085篇 |
1999年 | 31344篇 |
1998年 | 9458篇 |
1997年 | 8711篇 |
1996年 | 8597篇 |
1995年 | 8096篇 |
1994年 | 7807篇 |
1992年 | 26782篇 |
1991年 | 26251篇 |
1990年 | 25747篇 |
1989年 | 24791篇 |
1988年 | 23327篇 |
1987年 | 22983篇 |
1986年 | 21828篇 |
1985年 | 21162篇 |
1984年 | 16430篇 |
1983年 | 14049篇 |
1982年 | 8885篇 |
1981年 | 8234篇 |
1980年 | 7695篇 |
1979年 | 16781篇 |
1978年 | 12148篇 |
1977年 | 10221篇 |
1976年 | 9345篇 |
1975年 | 10172篇 |
1974年 | 12662篇 |
1973年 | 12159篇 |
1972年 | 11559篇 |
1971年 | 10706篇 |
1970年 | 10242篇 |
1969年 | 9918篇 |
1968年 | 8913篇 |
1967年 | 8237篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Yeon Seok Lee June Hyunkyung Lee Jae Eun Choi Joo Young Kim Tae Young Han 《Pediatric dermatology》2021,38(1):290-291
Erythema induratum of Bazin (EIB) is a form of tuberculid resulting from hypersensitivity to tuberculosis antigen. EIB occurs most commonly in middle‐aged women and is not typically seen in children. Here, we present a rare case of EIB, presenting as a chronic nodular panniculitis, in a 10‐year‐old Korean boy. 相似文献
72.
73.
74.
T.-Y. Huang Y.-J. Hsia M.-Y. Sung Y.-T. Wu P.-C. Hsu 《International journal of oral and maxillofacial surgery》2021,50(8):1100-1106
Zygomatic implant treatment is widely applied for severe maxillary atrophy to help rehabilitate the maxillary dentition. This retrospective study was performed to evaluate the actual radiographic bone–implant contact (rBIC) lengths of zygomatic implants. The records of 28 patients who underwent zygomatic implant surgery and subsequent follow-up examinations between August 2013 and September 2018 in the Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital were reviewed. The surgeries were performed by a single surgeon using the same treatment protocol. All patients had a computed tomography scan at 1 year after the surgery. Using three-dimensional imaging software, an investigator measured the rBIC lengths of 66 implants and documented their clinical status. The implant survival rate was 100%. The mean rBIC length was significantly longer in male patients than in female patients (20.80 ± 5.88 mm versus 17.79 ± 6.34 mm; P = 0.028). The mean rBIC length of double zygomatic implants was significantly longer when compared to that of single implants (21.11 ± 6.23 mm versus 17.75 ± 5.85 mm; P = 0.027). This article is novel in reporting the exact rBIC lengths of zygomatic implants in a clinical setting. The results showed that zygomatic implants are a viable treatment modality for full-mouth rehabilitation. 相似文献
75.
76.
77.
78.
W. Do T. Elzerman R. de Bree A. Rosenberg T. Forouzanfar E.M. Van Cann 《International journal of oral and maxillofacial surgery》2021,50(5):591-597
The aim of this study was to analyse the effect of body mass index (BMI), both low and high values, on the perioperative complication rate in patients with oral squamous cell carcinoma (OSCC). The medical records of 259 patients operated between 2014 and 2017 for OSCC were reviewed. Univariate and multivariate analyses were performed. Sixty of the 259 patients developed 87 complications. Low or high BMI was not associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade. Low BMI, American Society of Anesthesiologists score 2 and 3, a longer operating time, and increased blood loss were associated with a longer hospital stay. Low BMI was associated with a longer hospital stay. Neither low nor high BMI was associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade. 相似文献
79.