Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_16175217_1 (children_per_donor VARCHAR, allowed_recipients VARCHAR)

### Question ###
List the possible children per donor levels for countries where the allowed recipients is no data.

### Accurate SQL ###

SELECT children_per_donor FROM table_16175217_1 WHERE allowed_recipients = "no data"