全文获取类型
收费全文 | 1169篇 |
免费 | 72篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 54篇 |
妇产科学 | 26篇 |
基础医学 | 142篇 |
口腔科学 | 33篇 |
临床医学 | 91篇 |
内科学 | 138篇 |
皮肤病学 | 107篇 |
神经病学 | 16篇 |
特种医学 | 54篇 |
外科学 | 105篇 |
综合类 | 282篇 |
预防医学 | 84篇 |
眼科学 | 4篇 |
药学 | 23篇 |
1篇 | |
肿瘤学 | 77篇 |
出版年
2022年 | 4篇 |
2021年 | 12篇 |
2020年 | 12篇 |
2019年 | 14篇 |
2018年 | 9篇 |
2017年 | 8篇 |
2016年 | 12篇 |
2015年 | 30篇 |
2014年 | 33篇 |
2013年 | 35篇 |
2012年 | 33篇 |
2011年 | 43篇 |
2010年 | 75篇 |
2009年 | 58篇 |
2008年 | 71篇 |
2007年 | 66篇 |
2006年 | 62篇 |
2005年 | 49篇 |
2004年 | 61篇 |
2003年 | 32篇 |
2002年 | 47篇 |
2001年 | 37篇 |
2000年 | 38篇 |
1999年 | 40篇 |
1998年 | 31篇 |
1997年 | 35篇 |
1996年 | 32篇 |
1995年 | 22篇 |
1994年 | 25篇 |
1993年 | 15篇 |
1992年 | 24篇 |
1991年 | 11篇 |
1990年 | 11篇 |
1989年 | 18篇 |
1988年 | 13篇 |
1987年 | 15篇 |
1986年 | 11篇 |
1985年 | 12篇 |
1984年 | 7篇 |
1983年 | 6篇 |
1982年 | 11篇 |
1981年 | 10篇 |
1980年 | 9篇 |
1979年 | 5篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1972年 | 3篇 |
1967年 | 2篇 |
1961年 | 2篇 |
排序方式: 共有1243条查询结果,搜索用时 15 毫秒
1.
Phantana-angkool April Voci Amy E. Warren Yancey E. Livasy Chad A. Beasley Lakesha M. Robinson Myra M. Hadzikadic-Gusic Lejla Sarantou Terry Forster Meghan R. Sarma Deba White Richard L. 《Annals of surgical oncology》2019,26(12):3874-3882
Annals of Surgical Oncology - The role of sentinel lymph node biopsy (SLNB) when ductal carcinoma in situ with microinvasion (DCISM) is identified on core biopsy is unclear. Our aim was to assess... 相似文献
2.
MUAMMER SEYHAN BAAK KANDI COKUN HÜLYA SALAM HAMDI ÖZCAN YELDA KARINCAOLU 《Pediatrics international》2006,48(6):525-530
BACKGROUND: The present study was aimed to define the gender ratio, familial occurrence, age of onset, precipitating factors, clinical types, nail and joint involvement of psoriasis in childhood and adolescence in Turkey. METHODS: A total of 61 children with psoriasis under 18 years old were evaluated retrospectively, for age, gender, age of disease onset, family history, concomitant disease, the clinical type of psoriasis, clinical localization, nail and joint involvement and treatment modalities. RESULTS: Of the patients, 23 (37.70%) were boys and 38 (62.30%) were girls. Mean age was 9.28 +/- 4.02 years in girls and 11.18 +/- 3.85 years in boys (9.96 +/- 4.03 years in all children). Mean age at the onset of the disease was 6.81 +/- 4.11 years in girls and 7.03 +/- 4.28 years in boys (6.89 +/- 4.14 years in all patients). In 14 (23%) cases, a positive family history was detected. The most frequent probable triggering factors were upper respiratory tract infections (14.8%) and positive throat culture for A group ss-hemolytic streptococcus (21.3%). Frequency of emotional stress and psychiatric morbidity were 54% and 9.8%, respectively. The most frequent localizations at onset were trunk (44.3%), extremities (54.0%), and scalp (36.0%). Three children (4.9%) had a history of dissemination from psoriatic diaper rash. In total, 51 (83.6%) patients presented with psoriasis vulgaris, eight (13.1%) with generalized pustular psoriasis, and the remaining two (3.3%) with erythrodermic psoriasis. CONCLUSION: The incidence of psoriasis among dermatological patients in childhood and adolescence was 3.8%. The disease tends to appear earlier in girls than boys. The authors suggested that stress and upper respiratory infections are the most important triggering factors in childhood and adolescence psoriasis. 相似文献
3.
V Aerra M Kuduvalli AN Moloto AK Srinivasan AD Grayson BM Fabri AY Oo 《Journal of cardiothoracic surgery》2006,1(1):6-5
Background
Atrial fibrillation can occur in up to 40% of patients undergoing coronary surgery. 相似文献4.
Deborah S. Lasley MD Abbey Eblen MD Michael K. Yancey MD Patrick Duff MD 《American journal of obstetrics and gynecology》1997,176(6):1250-1254
OBJECTIVE: Our purpose was to determine whether the incidence of postoperative endometritis and wound infection is associated with the method of placental removal at the time of cesarean section.STUDY DESIGN: Parturients undergoing cesarean delivery were prospectively randomized to have the placenta removed manually or spontaneously. Patients were excluded from participation if they had received intrapartum prophylactic antibiotics or had been determined to have chorioamnionitis. After delivery of the infant women in the manual group had the placenta extracted by the primary surgeon, whereas women in the spontaneous group had the placenta delivered by gentle traction on the umbilical cord. All study subjects received perioperative prophylactic antibiotics. The primary outcome variable was a postcesarean infection, defined as postcesarean endometritis or wound cellulitis requiring drainage and antibiotic therapy.RESULTS: A total of 333 women were enrolled in the investigation, with 165 assigned to the manual removal group and 168 allocated to have spontaneous removal. There were no statistically significant differences in mean gestational age, frequency or duration of ruptured membranes, frequency or duration of labor, or mean number of vaginal examinations between the two study groups. Postoperative infections occurred in 25 of 168 (15%) women in the spontaneous delivery group compared with 44 of 165 (27%) women in which the placenta was manually extracted (relative risk 0.6, 95% confidence interval 0.4 to 0.9, p = 0.01). Subset analysis of patients delivered with ruptured membranes similarly demonstrated a statistically significant reduction in the incidence of postoperative infections with spontaneous placental removal compared with manual extraction (20% vs. 38%, relative risk 0.5, 95% confidence interval 0.3 to 0.9, p = 0.02). There was a similar trend toward a reduction in postdelivery infections associated with spontaneous placental removal in women with intact membranes; however, this difference did not attain statistical significance.CONCLUSIONS: Spontaneous delivery of the placenta after cesarean delivery is associated with a decrease in the incidence of postcesarean infections. (Am J Obstet Gynecol 1997;176:1250-4.) 相似文献
5.
Diagnosis of perirenal fibrosis by MR imaging 总被引:1,自引:0,他引:1
A case of retroperitoneal perirenal fibrosis resulting in bilateral proximal ureteral obstruction is reported. Magnetic resonance imaging provided tissue specific diagnosis of the disease. 相似文献
6.
7.
8.
9.
10.