https://emedicine.medscape.com/article/2087291-overview thought to be a range of normal values. https://emedicine.medscape.com/article/2087291-overview https://emedicine.medscape.com/article/2087291-overview https://emedicine.medscape.com/article/2087291-overview https://emedicine.medscape.com/article/2087291-overview thought to be a range of normal values. https://emedicine.medscape.com/article/2087291-overview https://emedicine.medscape.com/article/2087291-overview