The following information may help to address your question:
The U.S. National Institutes of Health, through the National Library of Medicine, developed ClinicalTrials.gov to provide patients, family members, and members of the public with current information on clinical research studies. Currently,
If you are interested in enrolling in a clinical trial, you can find helpful general information on clinical trials at the following ClinicalTrials.gov Web page.
A tutorial about clinical trials that can also help answer your questions can be found at the following link from the National Library of Medicine:
Resources on many charitable or special-fare flights to research and treatment sites and low-cost hospitality accommodations for outpatients and family members, as well as ambulance services, are listed on the Web site of the Office of Rare Diseases Research (ORDR), part of the National Institutes of Health.