PAREXEL International Corp. has signed a definitive agreement to acquire privately-owned Quantum Solutions India (QSI), a provider of specialized pharmacovigilance services based in Chandigarh. Financial terms were not disclosed. The acquisition is expected to close in early April, subject to customary closing conditions.   QSI was established in 2004, and provides a range of pharmacovigilance services, including individual case safety report processing, brand physician activities, affiliate sup...