RT Journal Article SR Electronic T1 Relative frequencies of ophthalmia neonatorum and congenital nasolacrimal duct obstruction JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 59 OP 59 DO 10.3399/bjgp21X714905 VO 71 IS 703 A1 Weatherby, Thomas YR 2021 UL http://bjgp.org/content/71/703/59.1.abstract AB