RT Journal Article SR Electronic T1 Acomparative trial of A/Howard HI: A comparative trial of "Slow-Fe" and ferrous sulphate B.P. JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 56 OP 58 VO 20 IS 96 A1 H. I. Howard YR 1970 UL http://bjgp.org/content/20/96/56.abstract AB