IQVIA
PPD, Inc.
Parexel
PRA Health Sciences
Labcorp
Medpace
Amgen
GSK plc
Pfizer
IMS Health
Wipro
Veeva Systems
Merck & Co.
Contract research organization
syneoshealth.com
Syneos Health is an American company that provides contract research and commercial services to pharmaceutical and biotechnology companies. Wikipedia