Crook, M Haemoglobin in stools from neonates: measurement by a modified Apt-test. [electronic resource] - Medical laboratory sciences Oct 1991 - 346-7 p. digital Publication Type: Journal Article ISSN: 0308-3616 Subjects--Topical Terms: Feces--chemistryHemoglobins--analysisHumansInfant, NewbornMelena--diagnosisSpectrophotometry--methods