PROVIDENCE, R.I.--(BUSINESS WIRE)--Nautic Partners, LLC announced that it has completed the sale of Theorem Clinical Research, Inc. (Theorem) to Chiltern International, Inc. (Chiltern). The terms of the transaction were not disclosed. Headquartered in King of Prussia, Pa., Theorem is a leading full-service global contract research organization (CRO) that conducts early phase, Phase II/III and late phase clinical trials for leading pharmaceutical, biotech and medical device and diagnostic custom