function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alten, Ronald L.', 1],
    ['Barman, E. H. & Michat, M. C. & Alarie, Y. & Wolfe, G. W.', 1],
    ['Chapman, Eric G. & Richards, Austin B. & Dupuis, Julian R.', 4],
    ['Chittaro, Yannick & Sanchez, Andreas & Blanc, Mickaël', 1],
    ['Dauber, D.', 2],
    ['Gradinarov, Denis & Sivilov, Ognyan', 2],
    ['Gupta, Rajeev & Vitali, Francesco', 19],
    ['Karpinski, Lech & Szczepanski, Wojciech T.', 2],
    ['Karpinski, Lech & Szczepanski, Wojciech T. & lewa, Radoslaw', 5],
    ['Lazarev, Maxim A.', 2],
    ['Li, Zhu & Chen, Li', 2],
    ['Shapovalov, Andrey M.', 3],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 6],
    ['Webster, Reginald & McCoqrquodale, David & Majka, Christopher', 2],
    ['Webster, Reginald P. & Alderson, Chantelle A.', 2],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);