function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 11],
    ['Cai, Xiao-Dong & Li, Xin & Cao, Wen-Qiang & Yang, Ding', 3],
    ['Chagnon, Marie-Eve & Sinclair, Bradley J.', 15],
    ['Durante, Antonio & Apinda-Legnouo, Emelie Arlette', 5],
    ['Evenhuis, Neal L.', 4],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 9],
    ['Iwasa, Mitsuhiro', 23],
    ['Kühne, Lars', 20],
    ['MacGowan, I. & Vikhrev, N. E. & Krivosheina, M. G.', 17],
    ['Ozerov, A. L. & Krivosheina, M. G.', 43],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 8],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 10],
    ['V, Marco', 110],
    ['Šifner, František', 307],
    ['Šifner, František & R, Czech', 52],
    ['Other (13)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=656)',
    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);