Louise Woon Theng Lo, Jimin Suh, Jerry Yongqiang Chen, Ming Han Lincoln Liow, John Carson Allen, Ngai Nung Lo, Seng Jin Yeo, Tet Sen Howe, Joyce Suang Bee Koh Gestational age-specific normative values and determinants of serum progesterone through the first trimester of pregnancy. Chee Wai ...