function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Budaev, F. A. & Eremeeva, N. I. & Efimov, D. A.', 1],
    ['Darilmaz, Mustafa C. & Kiyak, Suat', 3],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Fery, Hans & Hájek, Jiří', 3],
    ['Gustafson, Grey T. & Miller, Kelly B.', 1],
    ['Lee, Dae-Hyun & Ahn, Kee-Jeong', 4],
    ['Liang, Zulong & Angus, Robert B. & Jia, Fenglong', 6],
    ['Miller, Kelly B. & Mazzoldi, Paolo & Wheeler, Quentin D.', 1],
    ['Salah, Mohamed & Cueto, Juan Antonio Régil', 1],
    ['Van Vondel, Bernhard J. & Ostovan, Hadi & Ghahari, Hassan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);