title: A study of the serological types of haemolytic streptococci in relation to the epidemiology of scarlatina and other infections due to these organisms.
authors.forename: H L
authors.initials: HL
authors.lastname: de Waal
references.citation: Am J Public Health Nations Health. 1935 May;25(5):531-44
references.pmid: 18014210
references.citation: Am J Public Health Nations Health. 1937 Dec;27(12):1259-66
references.pmid: 18014749