function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bhattarai, Santosh & Pokheral, Chiranjibi Prasad', 1],
    ['Ceríaco, L. M. P. & De Sá, S. & Bandeira, S. & Valério, H.', 1],
    ['Daudin, F. M.', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 5],
    ['Ivanov, Martin & Böhme, Madelaine', 2],
    ['Ivanov, Martin & Čerňanský, Andrej & Bonilla-Salomón, Isaac', 1],
    ['Marques, Mariana P. & Parrinha, Diogo & Lopes-Lima, Manuel', 1],
    ['Rage, Jean-Claude & Bailon, Salvador', 1],
    ['Schleip, Wulf D. & O\'Shea, Mark', 14],
    ['Segniagbeto, Gabriel Hoinsoude & Trape, Jean François', 2],
    ['Suraprasit, Kantapon & Jaeger, Jean-Jacques', 1],
    ['Szyndlar, Zbigniew & Georgalis, Georgios L.', 1],
    ['Sánchez-Vialas, Alberto & Calvo-Revuelta, Marta', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);