ClinicalTrials.gov is a registry and results database of federally and privately supported clinical trials conducted in the United States and around the world. ClinicalTrials.gov gives you information about a trial's purpose, who may participate, locations, and phone numbers for more details. This information should be used in conjunction with advice from health care professionals.

LGBTData.com serves as a no-cost, open-access clearinghouse for the collection of sexual orientation & gender identity data and measures.

This site also provides knowledgeable analysis, commentary and expert "how to" information on gathering such data effectively in scientific surveys, questionnaires and studies. Collected and categorized here you will find numerous datasets and links to rich data sources that are essential to LGBT health research, researchers, students, advocates and anyone interested in scientific-based information about LGBT people and populations.

The purpose of these guidelines is to assist health care professionals in the provision of diagnosis, treatment, education, and support to children born with disorders of sex development (DSDs) and to their families.

from UpToDate web site: UpToDate is the largest clinical community in the world dedicated to synthesizing knowledge for clinicians and patients. Our role is to facilitate interaction among members of the healthcare community and to synthesize and disseminate information in order to help clinicians provide better care.