RT Journal Article SR Electronic T1 Sinusoidal Fetal Heart Rate Pattern After Administration Of Nalbuphine JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 261 OP 262 DO 10.3122/jabfm.4.4.261 VO 4 IS 4 A1 Zeller, William A1 Kueck, Jana A1 Tennis, Glenda YR 1991 UL http://www.jabfm.org/content/4/4/261.abstract AB