About Our Business 24-Hour/7-Day Toll-Free Clinical Trial Call Center: SiteLINE operates a 24/7 response center staffed with experienced clinical trial personnel and Registered Nurses who answer study questions for study subjects, investigators, and other site staff. SiteLINE also places patient recruitment calls to potential study subjects who have indicated interest in a particular study.  This allows the client to focus on their study and avoids over-burdening study sites with phone calls. www.sitelinecenter.com 1-888-365-7004