function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 20],
    ['Cao, Liang-Ming & Achterberg, Cornelis Van & Tang, Yan-Long', 1],
    ['Kolarov, J.', 11],
    ['M. F & Kirtay, H. & Birol, O.', 1],
    ['Madl, Michael & S, Osprynchotus & H, Afrobystra', 1],
    ['Maqbool, Iqra & Varga, Oleksandr & Maqbool, Amir', 1],
    ['Petersen-Silva, Ricardo & Pujade-Villar, Juli & Naves, Pedro', 1],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 6],
    ['Riedel, Matthias & Diller, Erich & Japoshvili, George', 5],
    ['Schwarz, Martin & Holy, Kamil', 2],
    ['Sheng, Mao-Ling & Zhao, Rui-Xing & Sun, Shu-Ping', 2],
    ['Spasojevic, Tamara & Broad, Gavin R. & Klopfstein, Seraina', 1],
    ['Sun, Shu-Ping & Lü, Jun & Broad, Gavin R. & Li, Tao', 4],
    ['Varga, O. & Kostro-Ambroziak, A.', 8],
    ['Varga, Oleksandr', 52],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=117)',
    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);