function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 1],
    ['Barabanov, Andrei V. & Doronin, Igor V.', 20],
    ['Bonnaterre, Pierre Joseph', 3],
    ['Crochet, Pierre-Andre & Lymberakis, Petros & Werner, Yehudah L.', 1],
    ['Delfino, Massimo & Bailon, Salvador & Pitruzzella, Gaetano', 1],
    ['Dondorp, Esther & Denzer, Wolfgang', 1],
    ['Forsskål, Peter', 1],
    ['García-Díez, Teresa & González-Fernández, José E.', 1],
    ['Linnaeus, Carolus', 44],
    ['Oskyrko, Oleksandra & Jablonski, Daniel', 2],
    ['Sebastian Kirchhof & Johannes Penner & Mark-Oliver Rödel', 1],
    ['Sparrman, Anders', 3],
    ['Vanzolini, Paulo E. & Myers, Charles W.', 1],
    ['Vianey-Liaud, Monique & Comte, Bernard & Marandat, Bernard', 2],
    ['Šmíd, Jiří & Moravec, Jiří & Kodym, Petr & Kratochvíl, Lukáš', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    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);