Imaizumi, Y <br/><br/>
Analysis of multiple birth rates in Japan. 1. Secular trend, maternal age effect, and geographical variation in twinning rates.  [electronic resource] 

 -  Acta geneticae medicae et gemellologiae  1979 
 - 107-24 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0001-5660 
<br/><br/><label>Standard No.: </label>10.1017/s0001566000009144  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Birth Rate<br/>Demography<br/>Female<br/>Humans<br/>Japan<br/>Male<br/>Maternal Age<br/>Middle Aged<br/>Pregnancy<br/>Triplets<br/>Twins