Assertion: amniotic fluid | /r/HasProperty | described by phelan et al
Facets:
Source sentences:
text: Though there are several ways  to assess quantity of amniotic fluid ranging from clinical palpation to measurement of single deepest vertical pocket , amniotic fluid index (AFI) by four-quadrant technique as described by Phelan et al.  in 1987 and among them AFI is popular and reliable method of quantifying amniotic fluid till today.