function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arefina, Tatyana I.', 3],
    ['Bemmoussat-Dekkak, Soumya & Abdellaoui-Hassaine, Karima', 5],
    ['Chvojka, Pavel', 2],
    ['Embacher, G. & Malicky, H. & A. E & R. A', 3],
    ['Gibon, François-Marie', 7],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Johanson, Kjell Arne & Oláh, János', 20],
    ['Malicky, H.', 53],
    ['Malicky, H. & Ivanov, V. & Melnitsky, S.', 9],
    ['Malicky, Hans', 19],
    ['Peng, Lang & Deng, Zhen & Zhang, Yu-hua & Wang, Meng', 12],
    ['Peng, Lang & Ge, Xin-Yu & Sun, Chang-Hai & Wang, Bei-Xin', 5],
    ['Peng, Lang & Wang, Bei-Xin & Sun, Chang-Hai', 6],
    ['Qiu, Shuang & Morse, John C. & Yan, Yun-jun', 4],
    ['Wichard, Wilfried & Ross, Emma & Ross, Andrew J.', 3],
    ['Other (19)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=176)',
    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);