function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carrillo-Briceno, Jorge Domingo & Ruiz-Ramoni, Damian', 1],
    ['Casali, Daniel M & Boscaini, Alberto & Gaudin, Timothy J', 7],
    ['Mcafee, Robert K.', 3],
    ['Saint-André, Pierre-Antoine & Pujos, François & Cartelle, Cástor', 6],
    ['Varela, Luciano & Tambusso, P. Sebastián & Fariña, Richard A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);