-Either no or way too couple of sample observations have been accessible to compute an estimate, or even a ratio of medians cannot be calculated simply because a person or both of those of your median estimates falls in the lowest or upper interval of an open finished distribution. การจะเลิกบุหรี่ให้เด็ดขาดไม่ใช่เรื่องง่าย https://ks-quik33211.digitollblog.com/26330973/not-known-details-about-ks-quik