Lundgren, E., Szabo, E., Ljunghall, S., Bergström, R., Holmberg, L., & Rastad, J. (1998). Population based case-control study of sick leave in postmenopausal women before diagnosis of hyperparathyroidism. BMJ.

Lundgren, Ewa, Eva Szabo, Sverker Ljunghall, Reinhold Bergström, Lars Holmberg, ja Jonas Rastad. "Population Based Case-control Study of Sick Leave in Postmenopausal Women Before Diagnosis of Hyperparathyroidism." BMJ 1998.

Lundgren, Ewa, et al. "Population Based Case-control Study of Sick Leave in Postmenopausal Women Before Diagnosis of Hyperparathyroidism." BMJ 1998.