RT - Journal TY - JOUR A1 - Singh, Poonam T1 - Collaborating centres: Rediscovering an extended arm of World Health Organization YR - 2005/1/1 JF - Hepatitis B Annual JO - Hep B Annual SP - 11 OP - 13 VO - 2 IS - 1 UL - https://www.hepatitisbannual.org/article.asp?issn=0972-9747;year=2005;volume=2;issue=1;spage=11;epage=13;aulast=Singh;t=5 DO - 10.4103/ijmr.IJMR_118_18 N2 - ER -