| who working group on revision of the manual of laboratory methods for testing dtp vaccines-report of two meetings held on 20-21 july 2006 and 28-30 march 2007, geneva, switzerland. | this report reflects the discussion and conclusions of a who group of experts from national regulatory authorities (nras), national control laboratories (ncls), vaccine industries and other relevant institutions involved in standardization and control of diphtheria, tetanus and pertussis vaccines (dtp), held on 20-21 july 2006 and 28-30 march 2007, in geneva switzerland for the revision of who manual for quality control of dtp vaccines. taking into account recent developments and standardization ... | 2008 | 18336960 |