Article History
Received: 11 February 2019
Revised: 21 February 2019
Accepted: 22 February 2019
First Online: 2 April 2019
Compliance with Ethical Standards
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: Shamim MF Begum, Lutfun Nisa, and Azmal K. Sarker declare that they have no conflict of interest. There is no source of funding.
: This is a perspective article describing the summation information on the basis of retrospective data from different nuclear medicine institutes. Data were obtained with the consent of the institutes. Institutional basic data contain human participant involvement in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants during collection of the basic data in individual institute.This article does not contain any studies with animals performed by any of the authors.