title: [Estimation of sample sizes in four field tables].
authors.affiliation: Institut für Wissenschaftsinformation in der Medizin, Berlin.
authors.forename: E
authors.initials: E
authors.lastname: Hiller
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic / Q000379:methods*; D005260:Female; D005839:Gentamicins / Q000008:administration & dosage; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000517:prevention & control; D012121:Respiration, Artificial; D012494:Sampling Studies; D013223:Statistics as Topic
chemical_list: D005839:Gentamicins
vernacular_title: Uber die Schätzung von Stichprobenumfängen bei Vierfeldertafeln.