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Wai Yee Wong
Publications - 11
Citations - 1709
Wai Yee Wong is an academic researcher. The author has contributed to research in topics: Semen & Sperm motility. The author has an hindex of 10, co-authored 11 publications receiving 1630 citations.
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Journal ArticleDOI
Effects of folic acid and zinc sulfate on male factor subfertility: a double-blind, randomized, placebo-controlled trial.
Wai Yee Wong,Hans M.W.M. Merkus,Chris M.G. Thomas,Roelof Menkveld,Gerhard A. Zielhuis,Régine P.M. Steegers-Theunissen +5 more
TL;DR: Total normal sperm count increases after combined zinc sulfate and folic acid treatment in both subfertile and fertile men, and this finding opens avenues of future fertility research and treatment and may affect public health.
Journal ArticleDOI
Semen parameters, including WHO and strict criteria morphology, in a fertile and subfertile population: an effort towards standardization of in-vivo thresholds
Roelof Menkveld,Wai Yee Wong,Carl Lombard,Alex M.M. Wetzels,Chris M.G. Thomas,Hans M.W.M. Merkus,Régine P.M. Steegers-Theunissen +6 more
TL;DR: The semen analysis results of a fertile population were compared with those from a subfertile population, in order to establish normal cut-off values for the standard semen parameters with the aid of receiver operating characteristic (ROC) curve analysis.
Journal ArticleDOI
Male factor subfertility: possible causes and the impact of nutritional factors
Wai Yee Wong,Chris M.G. Thomas,Johannus M.W.M Merkus,Gerhard A. Zielhuis,Régine P.M. Steegers-Theunissen +4 more
TL;DR: Because most causes of male factor subfertility are unknown and in principle amenable to curative and/or preventive action by supplementation, emphasis should be put on studies on the effect of specific nutrients on male fertility.
Journal ArticleDOI
The impact of calcium, magnesium, zinc, and copper in blood and seminal plasma on semen parameters in men
Wai Yee Wong,Gert Flik,Pascal M.W. Groenen,Dorine W. Swinkels,Chris M.G. Thomas,Jenny H.J. Copius-Peereboom,Hans M.W.M. Merkus,Régine P.M. Steegers-Theunissen +7 more
TL;DR: Although calcium, magnesium, zinc, and copper play an essential role in spermatogenesis and fertility, the determination of these elements in blood and seminal plasma does not discriminate on the basis of fertility in this group of men.
Journal ArticleDOI
Nonsyndromic orofacial clefts: association with maternal hyperhomocysteinemia.
Wai Yee Wong,Tom K.A.B. Eskes,Anne‐Marie Kuijpers‐Jagtman,Paul H.M. Spauwen,Eric A.P. Steegers,Chris M.G. Thomas,Ben C.J. Hamel,Henk J. Blom,Régine P.M. Steegers-Theunissen +8 more
TL;DR: Evidence is offered that maternal hyperhomocysteinemia may be a risk factor for having nonsyndromic orofacial cleft offspring and vitamin B6 concentrations appeared to be significantly lower in cases compared with controls.