function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 30],
    ['Alonso, Felipe & Terán, Guillermo Enrique', 14],
    ['Angulo, Arturo', 40],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 27],
    ['Costa, Wilson J. E. M.', 123],
    ['Costa, Wison JEM & Amorim, Pedro F', 14],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 14],
    ['Hubbs, Carl L.', 27],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 14],
    ['Lucinda, Paulo Henrique Franco', 24],
    ['Lucinda, Paulo Henrique Franco & Reis, Roberto E.', 46],
    ['Myers, G. S.', 15],
    ['Paul V. Loiselle', 34],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 19],
    ['Wilson J. E. M. Costa', 183],
    ['Other (384)', 940]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1564)',
    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);