1. National Centre for Mass Spectrometry; Indian Institute of Chemical Technology; Hyderabad; 500 607; India
2. National Institute of Pharmaceutical Education and Research; Balanagar; Hyderabad; 500 037; India
3. United States Pharmacopeia-India Private Limited; Research and Development Laboratory; ICICI Knowledge Park, Turkapally, Shameerpet; Hyderabad; 500 078; India