RT Journal Article SR Electronic T1 Postdural puncture headache in obstetric patients JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 207 OP 208 DO 10.3399/bjgp19X702125 VO 69 IS 681 A1 Simon FitzGerald A1 Marwa Salman YR 2019 UL http://bjgp.org/content/69/681/207.abstract AB