function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahyong, Shane T.', 1],
    ['Brösing, Andreas', 1],
    ['Côtez, Emmanuel & Mabille, Anne & Chester, Chloë', 1],
    ['Demidow, Olga & Kihara, Terue C. & Arbizu, Pedro Martínez', 1],
    ['GUINOT, DANIÈLE & TAVARES, MARCOS & CASTRO, PETER', 1],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 1],
    ['Guinot, Danièle & Segonzac, Michel', 5],
    ['Hessler, Robert R. & Martin, Joel W.', 1],
    ['Martin, Joel W. & Haney, Todd A.', 12],
    ['Mclay, Colin', 4],
    ['Takeda, Masatsune & Hashimoto, Jun & Ohta, Suguru', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);