function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 1],
    ['Chapman, Eric G. & Richards, Austin B. & Dupuis, Julian R.', 4],
    ['Georgiev, Georgi & Sakalian, Vladimir & Mirchev, Plamen', 1],
    ['Gupta, Rajeev & Vitali, Francesco', 2],
    ['Ilić, Nastas & Ćurčić, Srećko', 1],
    ['Lingafelter, Steven W.', 1],
    ['MONNÉ, MIGUEL A.', 12],
    ['Monné, Miguel A. & Monné, Marcela L.', 1],
    ['Perez-Flores, Oscar & Toledo-Hernandez, Victor H.', 1],
    ['Pérez-Hernández, Cisteil Xinum', 1],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 1],
    ['Santos-Silva, Antonio & Nearns, Eugenio H. & Swift, Ian P.', 25],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);