全文获取类型
收费全文 | 6535篇 |
免费 | 2470篇 |
国内免费 | 32篇 |
专业分类
耳鼻咽喉 | 184篇 |
儿科学 | 180篇 |
妇产科学 | 196篇 |
基础医学 | 68篇 |
口腔科学 | 34篇 |
临床医学 | 1123篇 |
内科学 | 1827篇 |
皮肤病学 | 422篇 |
神经病学 | 613篇 |
特种医学 | 190篇 |
外科学 | 2526篇 |
综合类 | 4篇 |
预防医学 | 522篇 |
眼科学 | 509篇 |
药学 | 50篇 |
肿瘤学 | 589篇 |
出版年
2024年 | 87篇 |
2023年 | 682篇 |
2022年 | 72篇 |
2021年 | 248篇 |
2020年 | 374篇 |
2019年 | 137篇 |
2018年 | 636篇 |
2017年 | 713篇 |
2016年 | 616篇 |
2015年 | 561篇 |
2014年 | 752篇 |
2013年 | 684篇 |
2012年 | 277篇 |
2011年 | 249篇 |
2010年 | 456篇 |
2009年 | 633篇 |
2008年 | 287篇 |
2007年 | 127篇 |
2006年 | 201篇 |
2005年 | 131篇 |
2004年 | 101篇 |
2003年 | 87篇 |
2002年 | 50篇 |
2001年 | 107篇 |
2000年 | 48篇 |
1999年 | 76篇 |
1998年 | 93篇 |
1997年 | 97篇 |
1996年 | 66篇 |
1995年 | 65篇 |
1994年 | 42篇 |
1993年 | 34篇 |
1992年 | 38篇 |
1991年 | 33篇 |
1990年 | 20篇 |
1989年 | 17篇 |
1988年 | 23篇 |
1987年 | 12篇 |
1986年 | 10篇 |
1985年 | 6篇 |
1984年 | 5篇 |
1983年 | 8篇 |
1982年 | 12篇 |
1981年 | 9篇 |
1980年 | 8篇 |
1972年 | 4篇 |
1971年 | 3篇 |
1964年 | 3篇 |
1962年 | 3篇 |
1956年 | 5篇 |
排序方式: 共有9037条查询结果,搜索用时 10 毫秒
81.
C.P. Chow MBBS MRCPCH H.K. Ho MBBS MRCP G.C.F. Chan MD FRCPCH S.Y. Ha MBBS FRCPCH 《Pediatric blood & cancer》2009,52(3):415-417
Rosai–Dorfman disease (RDD) is a rare entity of non‐Langerhans cell histiocytoses (non‐LCH) which usually presents with bilateral painless cervical lymphadenopathy. We describe a neonate with RDD who presented with anemia, thrombocytopenia and hepatomegaly. He recovered spontaneously with conservative management. This represents an atypical presentation of RDD. Conservative management with close monitoring can be adopted for some with systemic involvement. Pediatr Blood Cancer 2009;52:415–417. © 2008 Wiley‐Liss, Inc. 相似文献
82.
MOHAMED AL KARAWI FA ABDELRAHMAN ELSHEIKH MOHAMED MBBS Dip.Ven. MRCP DTMH M. ANWAR HANID MD MRCP RAJI AL OTAIBI FA 《Journal of gastroenterology and hepatology》1986,1(2):151-157
Abstract Thirty consecutive patients with bleeding oesophageal varices secondary to schistosomal liver disease received injection sclerotherapy. These formed a part of a prospective study, to evaluate the role of sclerotherapy in the treatment of bleeding oesophageal varices due to different aetiological factors in patients seen at the Gastroenterology Unit, Riyadh Armed Forces Hospital, Saudi Arabia, between December 1980 and July 1984.
Schistosomiasis is endemic in parts of Saudi Arabia. Sclerotherapy has a special place in schistosomal liver disease as liver function is well preserved in this disease. The new antischistosomal drugs are effective and may halt the progress of the disease. However, in many patients portal hypertension with bleeding oesophageal varices is found at diagnosis. Of the patients with schistosomiasis, 63.3% were Group A Child's Classification. Oesophageal varices have been eradicated in 11 cases during the mean follow-up period of 28 months (range 3-44 months). Four patients were referred for surgery because of bleeding gastric varices, two of whom died following operation. One patient, who was also hepatitis B surface antigen positive, died due to re-bleeding from gastric varices. The remaining 25 patients had no recurrence of bleeding and their liver function remained satisfactory.
Surgical procedures for oesophageal varices in schistosomiasis carry the risk of peri-operative and postoperative morbidity and mortality. In contrast, complications following sclerotherapy are minor compared to surgical procedures and none of our patients had any serious sclerotherapy complications. 相似文献
Schistosomiasis is endemic in parts of Saudi Arabia. Sclerotherapy has a special place in schistosomal liver disease as liver function is well preserved in this disease. The new antischistosomal drugs are effective and may halt the progress of the disease. However, in many patients portal hypertension with bleeding oesophageal varices is found at diagnosis. Of the patients with schistosomiasis, 63.3% were Group A Child's Classification. Oesophageal varices have been eradicated in 11 cases during the mean follow-up period of 28 months (range 3-44 months). Four patients were referred for surgery because of bleeding gastric varices, two of whom died following operation. One patient, who was also hepatitis B surface antigen positive, died due to re-bleeding from gastric varices. The remaining 25 patients had no recurrence of bleeding and their liver function remained satisfactory.
Surgical procedures for oesophageal varices in schistosomiasis carry the risk of peri-operative and postoperative morbidity and mortality. In contrast, complications following sclerotherapy are minor compared to surgical procedures and none of our patients had any serious sclerotherapy complications. 相似文献
83.
Jonathan G. Amatruda MD Ronit Katz DPhil Carmen A. Peralta MD MAS Michelle M. Estrella MD MHS Harini Sarathy MBBS MHS Linda F. Fried MD MPH Anne B. Newman MD MPH Chirag R. Parikh MBBS PhD Joachim H. Ix MD MAS Mark J. Sarnak MD MS Michael G. Shlipak MD MPH for the Health ABC Study 《Journal of the American Geriatrics Society》2021,69(3):726-734
84.
85.
Patrick P. Coll MD AGSF Steven Phu MSc Samah H. Hajjar MBBS Ben Kirk PhD Gustavo Duque MD PhD Pam Taxel MD 《Journal of the American Geriatrics Society》2021,69(5):1388-1398
Osteoporosis and sarcopenia are common in older adults. Osteoporosis is a systemic skeletal disease characterized by low bone mass and microarchitectural deterioration of bone tissue, with a consequent increase in bone fragility and susceptibility to fracture. Bone fractures can result in changes in posture, pain, the need for surgical repair and functional impairment. Sarcopenia is the progressive and generalized loss of skeletal muscle mass, strength and/or physical performance. Older adults with sarcopenia experience increased risk of frailty, disability, hospitalizations, mortality, and a reduced quality of life. In this narrative review we provide guidance regarding the prevention of both osteoporosis and sarcopenia, including interventions that prevent both conditions from occurring, recommended screening and treatment to prevent progression. 相似文献
86.
Vardhmaan Jain MD Ankur Kalra MD Muhammad Siyab Panhwar MD Agam Bansal MD Amy Nowacki PhD Kirtipal Bhatia MD Tanush Gupta MD Nichole L. Ineman MSN Safi U. Khan MD Amar Krishnaswamy MD Grant W. Reed MD Rishi Puri MBBS PhD Samir R. Kapadia MD Lars G. Svensson MD PhD Anmar Kanaa'N MD Joseph A. Lahorra MD 《Journal of the American Geriatrics Society》2021,69(5):1363-1369
87.
88.
89.
Abhishek Jaiswal MD Naga Vaishnavi Gadela MBBS David Baran MD Kathir Balakumaran MD Andrew Scatola MD Joseph Radojevic MD Jason Gluck MD Sabeena Arora MD Jonathan Hammond MD Ayyaz Ali MD Douglas L. Jennings PharmD William L. Baker PharmD 《Journal of the American Geriatrics Society》2021,69(9):2507-2517
90.
David A. Ganz MD PhD Anita H. Yuan PhD MPH Erich J. Greene PhD Nancy K. Latham PT PhD Katy Araujo MPH Albert L. Siu MD MSPH Jay Magaziner MSHyg PhD Jerry H. Gurwitz MD Albert W. Wu MD MPH Neil B. Alexander MD Robert B. Wallace MD MSc Susan L. Greenspan MD Jeremy Rich DPM Elena Volpi MD PhD Stephen C. Waring DVM PhD Patricia C. Dykes RN PhD MA Fred Ko MD MS Neil M. Resnick MD Siobhan K. McMahon PhD MPH GNP Shehzad Basaria MD Rixin Wang PhD Charles Lu MS Denise Esserman PhD James Dziura PhD Michael E. Miller PhD Thomas G. Travison PhD Peter Peduzzi PhD Shalender Bhasin MB BS David B. Reuben MD Thomas M. Gill MD 《Journal of the American Geriatrics Society》2022,70(11):3221-3229