Address correspondence to Sujit K. Bhattacharya, Rajendra Memorial Research Institute of Medical Sciences, Indian Council of Medical Research, Agamkuan, PO Gulzarbagh, Patna 800 007, Bihar, India. E-mail:
Authors’ addresses: Alok Ranjan, Vijay P. Singh, Niyamat A. Siddique, Chandra S. Lal, Prabhat K. Sinha, Kamal Kishore, and Sujit K. Bhattacharya, Rajendra Memorial Research Institute of Medical Sciences, Indian Council of Medical Research, Agamkuan, PO Gulzarbagh, Patna 800 007, Bihar, India, Telephone: 91-33-2350-1176, Fax: 91-33-2350-5066 and 91-33-2353-2524, E-mail:
Acknowledgments: We thank N. K. Sinha, Sudarshan Prasad, and Baijnath Yadav for technical support and assistance and collection of blood samples.
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