1. Sarkar, S. L., Ind. Med. Gaz., 61, 62 (1926).
2. Lal et al., Ind. J. Med. Res., 27, 207 (1939); 28, 163 (1940); 29, 157, 167, 813, 839 (1941).
3. Chopra et al., Ind. Med. Gaz., 74, 193 (1939).
4. Pasricha et al., Ind. J. Med. Res., 27, 947 (1939).
5. Sarkar, Ann. Biochem. Exp. Med., 1, 59, 204 (1941).