Polyethylene glycol 3350 in occasional constipation: A one-week, randomized, placebo-controlled, double-blind trial

Table 5 List of study sites¹ and primary investigators

Site	Primary investigator
Product Investigations, Inc., Conshohocken, PA	Morris Shelanski, MD
Site 2, Turnpike Levittown, NY	Maurice Gunsberger, MD
Site 3, South Windsor, CT	Raymond Kurker, MD
International Research Services, Inc., Port Chester, NY	Roger A. Villi, MD
Hartford Research Center	Anthony Roselli, MD
Product Investigations, Inc., Modesto, CA	Clinton E. Prescott, MD
International Research Services, Inc, Rockland, ME	Robert Jorden, MD
Avon Family Medical Group, Avon, CT	Anthony Roselli, MD

¹Of the 8 participating sites, only 7 sites enrolled ≥ 1 subject.