function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abalo-Loko, Goudjo Ameto & Guelly, Kudzo Atsu', 1],
    ['Dauphin, Gregorio & Gradstein, S. Robbert & Allen, Noris Salazar', 2],
    ['Fan, Honghong & Wei, Guo & Chen, Xinlu & Guo, Hong', 2],
    ['Feldberg, Kathrin & Schaefer-Verwimp, Alfons & Li, Ya', 3],
    ['Gradstein, S. Robbert & Bernard, Elisabeth Lavocat', 1],
    ['Jarvis, Charlie', 1],
    ['Oliveira-Da-Silva, Fúvio Rubens & Ilkiu-Borges, Anna Luiza', 3],
    ['Promma, Chatchaba & Chantanaorrapint, Sahut', 1],
    ['Renner, Matt A. M. & Devos, Nicolas & Patino, Jairo', 10],
    ['Renner, Matt A. M. & Söderström, Lars & Hagborg, Anders', 1],
    ['Sarimi, Muhammad Syafiq & Pócs, Tamás & Lee, Gaik Ee', 1],
    ['Schäfer-Verwimp, A.', 7],
    ['Söderström, Lars & Hagborg, Anders & Konrat, Matt Von', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);