0000877318-00-000006 SC 13G 1 20000119 ADVANCED NEUROMODULATION SYSTEMS INC 0000351721 3841 751646002 TX 1231 SC 13G 34 005-33902 509230 ONE ALLENTOWN PARKWAY ALLEN TX 75002 9723909800 ONE ALLENTOWN PARKWAY ALLEN TX 75002 QUEST MEDICAL INC 19920703 FIRST PACIFIC ADVISORS INC /CA/ /ADV 0000877318 0000 043118452 MA 1231 SC 13G 11400 W OLYMPIC BLVD STE 1200 LOS ANGELES CA 90064 3109965436 FIRST PACIFIC ADVISORS INC/CA/ /ADV 19930727 SC 13G 1 000087731800000006-001-seq1-sc-13g.txt 12/31/1999 ADV NEROMODULATIONS SYS, INC 13G FILING