P N Demacker, R W Schade, A F Stalenhoef, P M Stuyt, A van't Laar
Demacker P N, Schade R W, Stalenhoef A F, Stuyt P M, van't Laar A.
Influence of contraceptive pill and menstrual cycle on serum lipids and high-density lipoprotein cholesterol concentrations.
Br Med J (Clin Res Ed) 1982; 284 :1213
doi:10.1136/bmj.284.6324.1213