| Alistar et al. (2014) | Limited financial resources | N.A. | Limited financial resources |
| Barrow et al. (2020) | N.A. | N.A. | Limited financial resources |
| de Vries et al. (2020) | Limited access | Limited access | Limited access |
| Deo and Sohoni (2015) | N.A. | Weak sample referral networks | N.A. |
| Deo et al. (2015) | N.A. | Limited human resources | Limited human resources |
| Earnshaw et al. (2007) | Limited financial resources | N.A. | N.A. |
| Galárraga et al. (2007) | N.A. | N.A. | Demand forecasting |
| Jónasson et al. (2017) | N.A. | Weak sample referral networks | N.A. |
| Juusola and Brandeau (2016) | Limited financial resources | N.A. | Limited financial resources |
| Kassa (2018) | Limited financial resources | N.A. | N.A. |
| Kessler et al. (2013) | Limited financial resources | N.A. | N.A. |
| Kok et al. (2015) | N.A. | Limited financial resources | N.A. |
| Lasry et al. (2007) | Limited financial resources | N.A. | N.A. |
| Lasry et al. (2011) | Limited financial resources | N.A. | N.A. |
| Malvankar and Zaric (2011) | Limited financial resources | N.A. | N.A. |
| McCoy and Johnson (2014) | N.A. | N.A. | Limited financial resources |
| Núñez Ares et al. (2016) | Limited access | Limited access | Limited access |
| Rauner et al. (2005) | Limited financial resources | N.A. | N.A. |
| Richter et al. (1999) | Limited financial resources | N.A. | N.A. |
| Vieira et al. (2003) | Limited financial resources | N.A | N.A |
| Wilson and Blower (2005) | N.A. | N.A. | Supply uncertainty and stock-outs |
| Yaylali et al. (2016) | Limited financial resources | N.A. | N.A. |
| Zaric and Brandeau (2001a) | Limited financial resources | N.A. | N.A. |
| Zaric and Brandeau (2007) | Limited financial resources | N.A. | N.A. |