The most common adverse events were nasopharyngitis ( @ -LSB- @ % -RSB- of @ ) , headache ( @ -LSB- @ % -RSB- of @ ) , and malaise ( nine -LSB- @ % -RSB- of @ ) in patients receiving ledipasvir-sofosbuvir ; and nasopharyngitis ( @ -LSB- @ % -RSB- of @ ) , anaemia ( @ -LSB- @ % -RSB- of @ ) , and headache in those receiving ledipasvir-sofosbuvir and ribavirin ( @ -LSB- @ % -RSB- of @ ) .