الأبحاث التي نسبها Peerford إلى John Elvis Hagan Jnr.، 1900–2026. سنة 2026 لم تكتمل: ستزداد أرقامها مع فهرسة أبحاثها.
Journal of Cardiovascular Development and Disease3
International Journal of Environmental Research and Public Health3
Edmond Kwesi Agormedah, John Elvis Hagan Jnr.
BMC Psychology3
John Elvis Hagan Jnr., Prosper Narteh Ogum
Frontiers in Sports and Active Living3
Edmond Kwesi Agormedah, Eugene Kofuor Maafo Darteh, John Elvis Hagan Jnr.
International Journal of Environmental Research and Public Health3
John Elvis Hagan Jnr., Prosper Narteh Ogum
Frontiers in Psychology
Public Health Challenges3
International Journal of Environmental Research and Public Health3
BMC Pregnancy and Childbirth
Frontiers in Global Women s Health5
John Elvis Hagan Jnr., Kwamena Sekyi Dickson
International Journal of Environmental Research and Public Health5
John Elvis Hagan Jnr., Kwamena Sekyi Dickson, Thomas Hormenu
Archives of Public Health1
Healthcare3
John Elvis Hagan Jnr., Kwamena Sekyi Dickson
PLoS ONE
Behavioral Sciences5
Addae Boateng Adu-Gyamfi, John Elvis Hagan Jnr.
Journal of Public Health