function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 1],
    ['Beardsley, John W.', 1],
    ['Belokobylskij, S. A. & Ku, D. - S.', 2],
    ['Belokobylskij, Sergey A. & Achterberg, Cornelis Van', 2],
    ['Belokobylskij, Sergey A. & Ku, Deokseo', 2],
    ['Belokobylskij, Sergey A. & Tang, Pu & He, Jun-Hua', 12],
    ['Beyarslan, Ahmet', 4],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 16],
    ['Cao, Liang-Ming & Achterberg, Cornelis Van & Tang, Yan-Long', 1],
    ['Cao, Liangming & Yang, Zhongqi & Tang, Yanlong & Wang, Xiaoyi', 1],
    ['Li, Tao & Zhang, Ying & van Achterberg, Cornelis', 1],
    ['Madl, M. & Achterberg, C. Van', 3],
    ['Muesebeck, C. F. W.', 1],
    ['Petersen-Silva, Ricardo & Pujade-Villar, Juli & Naves, Pedro', 1],
    ['Samin, N. & Ghahari, H. & N. S & Davidian, E.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);