Boomsma DI, Snieder H, de Geus EJ, van Doornen LJ. Heritability of blood pressure increases during mental stress. Twin Res 1998;1(1):15-24.

Cicuttini FM, Baker J, Hart DJ, Spector TD. Relation between Heberden’s nodes and distal interphalangeal joint osteophytes and their role as markers of generalised disease. Ann Rheum Dis 1998;57(4):246-8. 

Dolan AL, Arden NK, Grahame R, Spector TD. Assessment of bone in Ehlers Danlos syndrome by ultrasound and densitometry. Ann Rheum Dis 1998;57(10):630-3. 

Havenaar EC, Axford JS, Brinkman-van der Linden EC, Alavi A, Van Ommen EC, Van Het Hof B, Spector TD, Mackiewicz A, Van Dijk W. Severe rheumatoid arthritis predicts the pregnacy-induced clearease in Alpha3- Tycosylation of AlphaL-Acid Glycoprotein. Glycoconj. J 1998; 15(7): 723-729.

Hoffer MJ, Bredie SJ, Snieder H, Reymer PW, Demacker PN, Havekes LM, Boomsma DI, Stalenhoef AF, Frants RR, Kastelein JJ. Gender-related association between the -93T–>G/D9N haplotype of the lipoprotein lipase gene and elevated lipid levels in familial combined hyperlipidemia. Atherosclerosis 1998;138(1):91-9.

Keen RW, Woodford-Richens KL, Lanchbury JS, Spector TD. Allelic variation at the interleukin-1 receptor antagonist gene is associated with early postmenopausal bone loss at the spine. Bone 1998;23(4):367-71. 

Masud T, Mulcahy B, Thompson AV, Donnelly S, Keen RW, Doyle DV, Spector TD. Effects of cyclical etidronate combined with calcitriol versus cyclical etidronate alone on spine and femoral neck bone mineral density in postmenopausal osteoporotic women. Ann Rheum Dis 1998;57(6):346-9. 

Rigby AS, MacGregor AJ, Thomson G. HLA haplotype sharing in rheumatoid arthritis sibships: risk estimates subdivided by proband genotype. Genet Epidemiol 1998;15(4):403-18.

Samaras K, Kelly PJ, Spector TD, Chiano MN, Campbell LV. Tobacco smoking and oestrogen replacement are associated with lower total and central fat in monozygotic twins. Int J Obes Relat Metab Disord 1998;22(2):149-56.

Samaras K, Kelly PJ, Chiano MN, Arden N, Spector TD, Campbell LV. Genes versus environment. The relationship between dietary fat and total and central abdominal fat. Diabetes Care 1998;21(12):2069-76. 

Snieder H, MacGregor AJ, Spector TD. Genes control the cessation of a woman’s reproductive life: a twin study of hysterectomy and age at menopause. J Clin Endocrinol Metab 1998;83(6):1875-80 . 

Swale VJ, Spector TD, Bataille VA. Sarcoidosis in monozygotic twins [letter]. Br J Dermatol 1998;139(2):350-2.