Calling a user defined stored procedure from select statement mysql

I am trying to call a user defined stored procedure from a select statement and its giving me an error. However when I call a system procedure it works just fine. Is there a way to call a user defined procedure from a select statement. This is for mysql

SELECT ID, email FROM user PROCEDURE simpleproc();

give me an error ERROR 1106 (42000): Unknown procedure 'simpleproc'

mysql> call simpleproc();

Query OK, 0 rows affected (0.21 sec)

where as

SELECT ID, email FROM user PROCEDURE ANALYSE();

works