function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barahona-Segovia, Rodrigo M. & Riera, Pamela', 20],
    ['Miranda, Gil F. G. & Soares, Matheus M. M.', 1],
    ['Montoya, Augusto L.', 59],
    ['Montoya, Augusto León & Parada-Marín, Henry Mauricio', 4],
    ['Ricarte, Antonio & Marcos-García, Mª Ángeles', 7],
    ['Rotheray, G. E. & Hancock, E. G. & Marcos-García, M. A.', 21],
    ['Rotheray, Graham E. & Marcos-García, Maria-Angeles', 41],
    ['Sinclair, Bradley J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=154)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);