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  Indian J Med Microbiol
 

Figure 1: Flow diagram for examination of ED patients. All participants completed IIEF-5 questionnaire and underwent blood tests. Only ED patients underwent NPT, pDUS and NT. ED: erectile dysfunction; IIEF: International Index of Erectile Function; NPT: nocturnal penile tumescence; PDUS: penile color Doppler ultrasonography; NT: neurophysiological test.

Figure 1: Flow diagram for examination of ED patients. All participants completed IIEF-5 questionnaire and underwent blood tests. Only ED patients underwent NPT, pDUS and NT. ED: erectile dysfunction; IIEF: International Index of Erectile Function; NPT: nocturnal penile tumescence; PDUS: penile color Doppler ultrasonography; NT: neurophysiological test.