Medical Writing, Merck Research Laboratories, Upper Gwynedd, Pennsylvania, United States of America.|Informatics, Merck Research Laboratories, Boston, Massachusetts, United States of America.|Screening & Protein Sciences, Merck Research Laboratories, North Wales, Pennsylvania, United States of America.|Screening and Compound Profiling, Merck Research Laboratories, Kenilworth, New Jersey, United States of America.|Informatics, Merck Research Laboratories, West Point, Pennsylvania, United States of America.