This sampling method chooses subjects after they have been exposed to a risk factor. The subjects are then followed to see to what degree the condition of interest develops.
ID, 'custom_sentence', true); if (!empty($custom_sentence)) { ?>: ""
This sampling method chooses subjects after they have been exposed to a risk factor. The subjects are then followed to see to what degree the condition of interest develops.
ID, 'custom_sentence', true); if (!empty($custom_sentence)) { ?>