function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexeyev, D. O. & Katugin, O. N. & Bizikov, V. A.', 1],
    ['Berry, Samuel Stillman', 3],
    ['Fernández-Álvarez, Fernando Á & Taite, Morag', 37],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 1],
    ['Girard, Charles Frédéric', 1],
    ['Joubin, L.', 1],
    ['Kirk, Thomas W.', 1],
    ['Lesueur, Charles Alexandre', 4],
    ['Petit, Richard E.', 1],
    ['Tsuchiya, Kotaro', 1],
    ['Tsuchiya, Kotaro & Okutani, Takashi', 1],
    ['Young, Richard E. & Vecchione, Michael & Braid, Heather E.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);