<Tr> <Th> Typical use </Th> <Td> LAM: 2% Symptoms based: 2--25% Calendar based: 25% </Td> </Tr> <Tr> <Th_colspan="2"> Usage </Th> </Tr> <Tr> <Th> Reversibility </Th> <Td> Yes </Td> </Tr> <Tr> <Th> User reminders </Th> <Td> Dependent upon strict user adherence to method </Td> </Tr>

Catholic church's teaching on natural family planning