Decreased qualitatively penile erection.
http://purl.obolibrary.org/obo/UPHENO_0082003
http://purl.obolibrary.org/obo/HP_0000802
http://purl.obolibrary.org/obo/UPHENO_0053500
http://purl.obolibrary.org/obo/UPHENO_0080583