The kids were divided into two groups; one received 200mg daily of PS and the other under placebo for a period of 2 months.
ເດັກນ້ອຍໄດ້ຖືກແບ່ງອອກເປັນສອງກຸ່ມ; ຫນຶ່ງໄດ້ຮັບ 200mg ປະຈໍາວັນຂອງ PS ແລະອື່ນໆທີ່ຢູ່ພາຍໃຕ້ placebo ສໍາລັບໄລຍະເວລາ 2 ເດືອນ.