I. INTRODUCTION AND BACKGROUND
A. The Cancer Problem and Its Association with Hormones
A hundred years ago, when the average life expectancy was 34 years, death from cancer was a remote possibility. Today, when the life expectancy is about 64 years and increasing, cancer is an ever-present menace, since it is commonest in the older age groups (Ackerman and del Regato). In 1940 there were 170,000 deaths from cancer in the United States, thus making cancer second only to diseases of the circulatory system as a major cause of death. About 18% of all males and 22% of all females can be expected to harbor a cancer of some type during their lifetime (Dorn).Within recent years there has been a marked increase in cancer research directed toward the development of chemotherapeutic agents. The stimulus for these studies has been provided by the recognition of the limitations of surgery and
Thank you for submitting a comment on this article. It will be reviewed by JAMA Internal Medicine editors. You will be notified when your comment has been published. Comments should not exceed 500 words of text and 10 references.
Do not submit personal medical questions or information that could identify a specific patient, questions about a particular case, or general inquiries to an author. Only content that has not been published, posted, or submitted elsewhere should be submitted. By submitting this Comment, you and any coauthors transfer copyright to the journal if your Comment is posted.
* = Required Field
Disclosure of Any Conflicts of Interest*
Indicate all relevant conflicts of interest of each author below, including all relevant financial interests, activities, and relationships within the past 3 years including, but not limited to, employment, affiliation, grants or funding, consultancies, honoraria or payment, speakers’ bureaus, stock ownership or options, expert testimony, royalties, donation of medical equipment, or patents planned, pending, or issued. If all authors have none, check "No potential conflicts or relevant financial interests" in the box below. Please also indicate any funding received in support of this work. The information will be posted with your response.
Some tools below are only available to our subscribers or users with an online account.
Download citation file:
Web of Science® Times Cited: 32
Customize your page view by dragging & repositioning the boxes below.
More Listings atJAMACareerCenter.com >
Enter your username and email address. We'll send you a link to reset your password.
Enter your username and email address. We'll send instructions on how to reset your password to the email address we have on record.
Athens and Shibboleth are access management services that provide single sign-on to protected resources. They replace the multiple user names and passwords necessary to access subscription-based content with a single user name and password that can be entered once per session. It operates independently of a user's location or IP address. If your institution uses Athens or Shibboleth authentication, please contact your site administrator to receive your user name and password.