function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ancheng Peng & Michael S. Engel & Yuhui Zhuang & Ziying Wu', 3],
    ['Dohrn, H.', 1],
    ['Dufour, Léon', 1],
    ['Girod, Christophe & Matzke, Danilo', 1],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 4],
    ['Karthik, C. M. & Kalleshwaraswamy, C. M.', 2],
    ['Kočárek, Petr', 6],
    ['MACHÁýKOVÁ, Lenka & FIKÁýEK, Martin', 2],
    ['Meurgey, François & Ramage, Thibault', 1],
    ['Miles, Claire', 6],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Popham, Edward J.', 1],
    ['Serville, Audinet J. G.', 1],
    ['Steinmann, Henrik', 3],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    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);