程度是可以預期且輕微的反應，尚未有需要更改治療方案的例子，服用威而鋼，因為威而鋼容易使血管擴張，增加陰莖的血供，所以過程就會產生一些反擴血管的副作用。
International speaker / activities
Brunei
Brunei Library Association
Cambodia
Cambodia Library Association
IATUL Directors’ Summit on Strategic Library Management in Emerging Countries
Canada
International Federation of Library Associations and Institutions (IFLA ) 74 IFLA General Conference and Assembly (2008)
Finland
International Federation of Library Associations and Institutions (IFLA ) 78 IFLA General Conference and Assembly (2012)
Japan
Japan Library Association
Korea
Keimyung University, School of Library and Information Service – Special lecture
Chonbuk University – Special lecture
Myanmar
CONSAL (Congress of Southeast Asian Librarians ) Executive board member (President of the Thai Library Association)
Philippines
Polytechnic University of the Philippines Open System (PUP OUS)
STOU -PUPOUS Research Colloquium
Singapore
International Federation of Library Associations and Institutions (IFLA ) 79 IFLA General Conference and Assembly (2013)
Taiwan
Graduate Institute of Library and Information Studies National Taiwan Normal University, Special lecture
Thailand
Various international organizing committees : chair and board member
ALIRG (Asia Library and Information Research Group)
ASEAN Information Literacy Network
Seminar on Library and Information Science Education: Collaboration Among ASEAN Countries
U.S.A.
International Federation of Library Associations and Institutions (IFLA ) 82nd IFLA General Conference and Assembly (2016)
Vietnam
CONSAL (Congress of Southeast Asian Librarians ) Executive board member (President of the Thai Library Association)
