**References**

**tc \l1 "Chapter 7: References**

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116. Ellis CN, Millikan LE, Smith EB, et al Comparison of adapalene 0.1% solution and tretinoin 0.025% gel in the topical treatment of acne vulgaris. Br J Dermatol 1998;139 Suppl 52:41-7. 

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127. Christiansen J, Holm P, Reymann F. Treatment of acne vulgaris with the retinoic acid derivative Ro 11-1430. A controlled clinical trial against retinoic acid. Dermatologica 1976;153:172-6.

128. Gunning DB, Barua AB, Lloyd RA, Olson JA. Retinoyl beta-glucuronide: A nontoxic retinoid for the topical treatment of acne. J Dermatol Treat 1994;5:181-185.

129. Christiansen JV, Gadborg E, Ludvigsen K, et al. Topical tretinoin, vitamin A acid (Airol) in acne vulgaris. A controlled clinical trial. Dermatologica 1974;148:82-9.

130. Krishnan G. Comparison of two concentrations of tretinoin solution in the topical treatment of acne vulgaris. Practitioner 1976;216:106-9.

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138. Anonymous. Retinoic acid in the treatment of acne. A report from the General Practitioner Research Group. Practitioner 1974;213:387-90.

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142. Hughes H, Brown BW, Lawlis GF, Fulton JE Jr. Treatment of acne vulgaris by biofeedback relaxation and cognitive imagery. J Psychosom Res 1983;27:185-91.

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148. Poulos ET, Tedesco FJ. Acne vulgaris: double-blind trial comparing tetracycline and clindamycin. Arch Dermatol 1976;112:974-6.

149. Hicks JH. Demethylchloretracycline: a double-blind study in the treatment of acne with attention to side-effects noted. South Med J 1962 Apr;55:357-60.

150. Knox JM, Owens DW. Demthethylchloretetracycline in the treatment of acne vulgaris. South Med J 1965 Aug;58:1056. 

151. Smith MA, Waterworth PM, Curwen MP. A controlled trial of oral antibiotics in the treatment of acne vulgaris. Br J Dermatol 1962 Mar;74:86-90.

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154. Plewig G, Petrozzi JW, Berendes U. Double-blind study of doxycycline in acne vulgaris. Arch Dermatol 1970;101:435-8.

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