Table 1.

List of excluded studies.

Study	Study design	Reasons for exclusion
Shieshia27	Before–after study	The study assessed the effectiveness of an SMS and web-based reporting system used to report stock data using SMS through mobile phones. We excluded this study because its focus was on the health products and did not specifically mention vaccines
Kapuria28	Before–after study	The study assessed the implementation of vaccine logistic management system that enables the visibility of stock levels in real time coupled with strengthening of human resources capacity. We excluded this study because at the time of assessing the article, results of the study were not out yet
Brown18	Modeling study	This study assessed the effects of redesigning the vaccine supply chain. However, the authors conducted the study using computational modeling, a basis for exclusion in this review