“…Phone calls were used to contact the patient in almost all reviewed articles [ 23 – 38 , 40 – 43 , 46 , 48 – 50 ], with some studies specifying the number of calls made (for instance, a maximum of three calls) and the use of predesigned, tested scripts [ 25 , 30 , 33 , 36 ]. When phone calls were not successful, other contact methods were reported, including mailing notifications (email or postal) to the last known address [ 23 – 26 , 28 , 31 , 34 , 35 , 40 , 41 , 43 , 48 , 49 ], home visits [ 23 – 26 , 28 , 31 – 33 , 48 ], searching for the patient in other public or external databases [ 25 – 28 , 32 , 33 , 41 , 45 , 47 – 49 ] and contacting a close relative or their emergency contact [ 24 , 25 , 30 ].…”