Reference	Objective	Design	Evidence
Beersma et al. [330]	Lack of standardization of antigens for M. pneumoniae serology of CAP. Variations in antibody detection depending on test applied	PCS	3A+
Talkington et al. [331]	Lack of standardization of antigens for M. pneumoniae serology of CAP	PCS	3A+
Templeton et al. [333]	Serology detects 50% and 66.6% of cases in acute and convalescent phases, respectively	PCS	3A+
Nir‐Paz et al. [332]	Lack of standardization of antigens for M. pneumoniae serology of CAP	PCS	3A+
Martinez et al. [334]	Detection of Mycoplasma pneumoniae in adult community‐acquired pneumonia by PCR and serology	PCS	3A+
Von Baum et al. [335]	Mycoplasma pneumoniae pneumonia revisited within the German Competence Network for Community‐acquired pneumonia (CAPNETZ)	PCS	3A+
Hvidsten et al. [336]	Chlamydophila pneumoniae diagnostics: importance of methodology in relation to timing of sampling	RCS	4A+
Elverdal et al. [337]	Comparison and evaluation of four commercial kits relative to an in‐house immunofluorescence test for detection of antibodies against Legionella pneumophila	RCS	4A+