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. 2022 Oct 6;10(10):1950. doi: 10.3390/healthcare10101950
Algorithm 3 Passport_query
Input: P_num, C_ID, DVP_ID
1 if Passport_query(P_num) <> null && Passport_query(DVP_ID) <> null then
2   Print query result from Passport_query(P_num);
3 if query result without question then
4    Print Passport query result from Customs Identity Database;
5    if Passport query result without question then
6      Recorded as accept entry;
7    else
8      Recorded as Reject entry;
9    end if
10 end if
11 end if