1. P. Manitto, Experientia27, 1147 (1971).
2. P. Manitto andD. Monti, Experientia28, 379 (1972).
3. See leading articles inBilirubin Metabolism in the Newborn (Eds.D. Bergsma, D. Y. Y. Hsia andC. Jackson; The Williams and Wilkins Company, Baltimore 1970).
4. J. D. Ostrow, J. clin. Invest.50, 707 (1971).
5. E. W. Callahan Jr., M. M. Thaler, M. Karon, K. Bauer andR. Schmid, Pediatrics46, 841 (1970).